How to Solve Quadratic Equations on Casio fx-991ES Scientific Calculator (4 Tricks!)

Watch my other calculator tutorials here-
goo.gl/uiTDQS
I'm Sujoy from India. Today I'll tell you how to solve quadratic equations on Casio fx-991ES scientific calculator. And how to solve Quadratic Formula easily. In this video you'll learn 4 tricks.
Topics explained-
1. Meaning of Quadratic Equations
2. How to solve Quadratic Equations using the Quadratic Formula
3. How to solve Quadratic Equations using the Equations Solver Mode (EQN) of Casio fx-991ES scientific calcultor
4. How to solve Quadratic Equations by programming the Casio fx-991ES scientific calcultor
5. What is the meaning of root? explained.
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I've uploaded videos on Statistics,Numerical Methods,
Business & Financial Mathematics,Operation Research,Computer Science & Engineering(CSE),Android Application Reviews,India Travel & Tourism,Street Foods,Life Tips and many other topics.
And a series of videos showing how to use your scientific calculators Casio fx-991ES & fx-82MS to do maths easily.
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[@klong4128]

fx 991 plus can solve quadratic/cubit equations very fast and directly by 'calc' or 'solv' many other methods .Yet many users never demo it. Many users just show how to use simple formula to solve it with advanced Scientific Calculator .You demo all. Good job done. When I use computer Excel .I found that Excel 2015 or later version is able to handle complex number .Thus I just write Excel formulae interlink each Cells.I just choose any 3 empty cells for input-number for quadratic .4 empty cells for input-number for cubit. When I complete inputs ,the answer immediately comeout in another output/number cell within a microseconds. Thus any super advanced Scientific Calculator that can write Program or doing Spreadsheet surely can replace the Scientific Calculator ! such as fx 991 ex or fx cg50 ! So far , I never see any Experts demo .They just demo formula usage that any NON-Scientific Calculator can do it to get numbers answers !

[@sujoy70]

1000+ views but only 15 likes/shares? That is below 2%. Come on guys, if you like any of my videos,I'd request you to please like & share it. Because sharing is caring :-)

[@sheenamarieibabao6253]

+Sujoy Krishna Das thank you sir!

[@theodoresweger4948]

Very good and appreciate the check by using the answer

[@nomi52x]

you are amazing!! easy and very helpful.

[@powerliftingteen8129]

Thanks, helped me a lot!

[@abdelmoniemkhider94]

thnx dude tdy I have a additional test and u helped me alot thnx

[@maricelpondoyo1792]

I understood well.It help a lot especially now that I reviewed for my LET board Exam

[@rafiquegazi6139]

wow..i learn a good trick..thanks for your video

[@rosseacevedo2990]

Great! thanks!

[@thanaponvachiraprapun3108]

Thank you for your video^^

[@rodrigoguzman8907]

thank you so much, greetings from mexico :D

[@LOVESHARMA098]

Great work

[@AshleiighTayla]

Is there a way that you can do this on the calculator when the coefficients of the polynomial are complex?

[@rosemonicajoy9579]

Thank you... Liked... Stay connected

[@pagdokarbak4319]

Thank you 👍

[@kamrulhaque2775]

its great job for student. actualy i was in need of such video.

[@sujoy70]

+Kamrul Haque It's my pleasure! Comments from viewers like you really motivates me! Watch my other videos here- goo.gl/uiTDQS and give your valuable comments. Subscribe to my KZbin channel so that when I upload a new video,you get notified. If you like any of my videos,I'd request you to please like & share it. Because sharing is caring :-)

[@fariahamin6977]

Thank you 😊

[@salmanhadi8266]

Excellenttttt sir g

[@MyWatchP1]

I no you can use the calculator to fine LCM of a given numbers. Now how can I find the Common factors of x2-5x-6=0 to solve as a theory question? Thank u

[@sundaresanesan5787]

Sir It is Excellent explanation .please kindly include Muller,Chebyshev Bierge vieta,Bairstow , Graeffe,Cholesky numerical methods and also Romberg integration early since I have exam in the coming December.thank you very much for your interest in numerical statistics

[@sujoy70]

I didn't have those methods in my Undergraduate. What course you're studying? Tell me book's name which have all these methods covered.

[@jotsanameshram9859]

Thank you sir

[@pinaryilmazer300]

hey sujoy could you pls explain wheter we could convert the roots (such as 0.73) as a complex number. I would like to get my results whether real number or complex number. 0.73 would not help me. ASAP thanks a lot

[@themelancholicguy139]

Thank you bro❤🇧🇩

[@misty_doi11]

It was very helpful. :)

[@sujoy70]

Thanks! Subscribe to my KZbin channel so that when I upload a new video, you get notified. If you like any of my videos, request you to please like & share it. Because sharing is caring :-)

[@vibhore9624]

There is Equation mode in this caluclator we can solve it there instead of these lengthy process... Press Mode Then 5 for Eq. mode Then 3 for the equation u r solving Then put the values and = SOLUTION.😁

[@fouzantariq7113]

Thnks... Saved my nine minutes

[@ejariza9839]

@@fouzantariq7113 thank you ♥️ you saved me from 9mins vid hahah

[@VIMALANSBAI]

Then how to quit from it??

[@shajankavungal1018]

Good video

[@syedmaaez]

Amazing.!

[@sujoy70]

+Maaez Gillani It's my pleasure! Comments from viewers like you really motivates me! Watch my other videos here- goo.gl/uiTDQS and give your valuable comments. Subscribe to my KZbin channel so that when I upload a new video,you get notified. If you like any of my videos,I'd request you to please like & share it. Because sharing is caring :-)

[@Akhileshkattimani597]

Super sir

[@nitammall2640]

How to solve herones formula to find area of triangle

[@avinashjangir8580]

Thank You...

[@sujoy70]

+Avinash Jangir It's my pleasure! Comments from viewers like you really motivates me! Watch my other videos here- goo.gl/uiTDQS and give your valuable comments. Subscribe to my KZbin channel so that when I upload a new video,you get notified. If you like any of my videos,I'd request you to please like & share it. Because sharing is caring :-)

[@gbengao.michaeloyinloye335]

I wish one click of mine can give you a million likes. You gave me reasons not to dump this calc in the waste bin. Bravo !

[@sujoy70]

+MIKE MICHAEL It's my pleasure! Comments from viewers like you really motivates me! Watch my other videos here- goo.gl/uiTDQS and give your valuable comments.Subscribe to my KZbin channel so that when I upload a new video,you get notified. If you like any of my videos,I'd request you to please like & share it. Because sharing is caring :-)

[@rajatsinghpanwar9210]

Awewsome

[@mohammedshahid4535]

video is cool but I need some more features of this same calculator..... thank you

[@sujoy70]

For that you can checkout all my calculator videos here- My Casio Scientific Calculator Tutorials- goo.gl/uiTDQS

[@muhammadmustafa3158]

nicely done :)

[@sujoy70]

+Muhammad Mustafa It's my pleasure! Comments from viewers like you really motivates me! Watch my other videos here- goo.gl/uiTDQS and give your valuable comments. Subscribe to my KZbin channel so that when I upload a new video,you get notified. If you like any of my videos,I'd request you to please like & share it. Because sharing is caring :-)

[@Mind_Mirror]

Thanks sir but please don't give info what u r gonna do it is clear by video's name directly do the main part.

[@221hamada]

How can i solve 4x^2-29x+27 ( Factorize ) using fx9911 es plus or es >> ?

[@sujoy70]

+Ahmed hamada You can find value of X, but can't factorize (find individual factors) on this calc. Watch my other videos here- goo.gl/uiTDQS and give your valuable comments. Subscribe to my KZbin channel so that when I upload a new video,you get notified. If you like any of my videos,I'd request you to please like & share it. Because sharing is caring :-)

[@221hamada]

Thanks :))

[@ssunus1]

thank you, come again

[@sujoy70]

Antanas Gedminas It's my pleasure! Comments from viewers like you really motivates me! Watch my other videos here- goo.gl/uiTDQS and give your valuable comments. Subscribe to my KZbin channel so that when I upload a new video,you get notified. If you like any of my videos,I'd request you to please like & share it. Because sharing is caring :-)

[@miramardream]

I love that, “Because sharing is caring.”

[@djagoegei18]

Great video! Thank you!

[@sujoy70]

djagoegei18 It's my pleasure! Comments from viewers like you really motivates me! Watch my other videos here- goo.gl/uiTDQS and give your valuable comments. Subscribe to my KZbin channel so that when I upload a new video,you get notified. If you like any of my videos,I'd request you to please like & share it. Because sharing is caring :-)

[@pallavi2027]

Thank u

[@sujoy70]

+pallavi m n It's my pleasure! Comments from viewers like you really motivates me! Watch my other videos here- goo.gl/uiTDQS and give your valuable comments. Subscribe to my KZbin channel so that when I upload a new video,you get notified. If you like any of my videos,I'd request you to please like & share it. Because sharing is caring :-)

[@lintonlinton2989]

❤❤

[@karthik4623]

How much bro this calculator

[@samhoey8247]

I have marhs test tomorrow and my calculators so shitty i cant do the over sign

[@SK_SIR_621]

how to calculate equation 1.06*10^6D+(D-40)^4=D^4

[@sujoy70]

Sohail Shaikh Try it yourself. To know more,check my this video- kzbin.info/www/bejne/goC3o5qpmMuCd5o

[@nanda4131]

Hi bro am just a guy like you ...can u tell me how much can we make by KZbin videos like yours.....?????

[@sujoy70]

nanda kishore I can't give u exact ans,go google,u'll know.

[@nanda4131]

Thank for reply...

[@kohyarshaikh]

very good

[@Sameer-zz7rv]

My answer comes with an angle...how to solve it?

[@josemanuelroa4620]

That happens when you put your Calculator in complex format. An angle of 180 means negative. For example 2 angle 180 means -2

[@mohitparwal7124]

I welcomes you......LOL

[@oikxsu6448]

its negative not minus

[@miramardream]

ASMR math

[@sandeeppatel-hi1mv]

What is L-R???

[@akashvaid2492]

Hutia ha tu