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GED Math: The Quadratic Formula

  Рет қаралды 12,258

Light & Salt Learning

Light & Salt Learning

Күн бұрын

Пікірлер: 32
@yvetteguerreroutterback2153
@yvetteguerreroutterback2153 2 жыл бұрын
I just wanted to say a MILLION THANK YOu’s for this video!!! I searched all of the wed looking for someone to break this down for me & you did just that!! Even calling it nasty the way I do!! Thank You so much for this!!!!!
@LightandSaltLearning
@LightandSaltLearning 2 жыл бұрын
You are so welcome!
@sairaahmed3475
@sairaahmed3475 3 жыл бұрын
what a wonderful video on solving Quadratic with formula. you are such a good teacher.
@LightandSaltLearning
@LightandSaltLearning 3 жыл бұрын
Glad you think so!
@AshleySmith-g1x
@AshleySmith-g1x 11 ай бұрын
i'll always wonder why we need to know this.. when i've had every job in the book... and still have never used this...
@LightandSaltLearning
@LightandSaltLearning 11 ай бұрын
I understand! Thankfully, we have easy ways of learning it!
@julielake-berton4535
@julielake-berton4535 Жыл бұрын
Question about the last problem (5x²-4x=6): Why can't we just change 2√34 to a decimal? When I do that I get x=1.6 and x= -0.8 as answers. Are those answers wrong? Tia.
@TyHero15
@TyHero15 2 ай бұрын
Wish there had been an answer to this question!
@soumayasammie2613
@soumayasammie2613 5 жыл бұрын
I'm getting it! Just keep messing up with the negative signs 🤦 need to get the hang of those with this formula. Its just so much is happening you forget the small details. Sometimes I try to solve before you. And I did 1 - 288 I forgot to turn it into a + and it messed everything up. Didn't get a even square root or anything lol.
@LightandSaltLearning
@LightandSaltLearning 5 жыл бұрын
Yay for "getting it"!!! What an awesome feeling. Yes, losing negatives is a very common student issue. I often joke that I haven't yet met a student who's bad at algebra but I've met plenty who were crappy secretaries. The good news is, with repetition, you will make those types of errors less and less.
@soumayasammie2613
@soumayasammie2613 5 жыл бұрын
So watched this again lol. Got them all right! But for the last question I reduced everything even the number in the radical sign. 34 to 17 😂 well guess I wasn't supposed to do that. So we reduce everything if they have the same factor but don't reduce inside the radical sign. Got it now
@LightandSaltLearning
@LightandSaltLearning 5 жыл бұрын
Exactly. Whole numbers reduce with whole numbers. Radicals can reduce with radicals, but since the quadratic formula doesn't have radicals in the denominator, that wouldn't be an issue. Be careful though. You can only reduce if you can pull a factor out of EVERY term. If the radical doesn't have a whole number out front, you won't be able to reduce anything. Does that make sense?
@soumayasammie2613
@soumayasammie2613 5 жыл бұрын
So if the there isn't a perfect squre root then it's a (i) answer? So they'll probably just give perfect square roots on the GED test with this?
@LightandSaltLearning
@LightandSaltLearning 5 жыл бұрын
There are actually a few possibilities. If it's a perfect square inside the radical, you'll get two rational answers (whole numbers or fractions), if it's a positive number inside the radical, you'll get answers that still have radicals, if its negative inside the radical, that's when you'll see imaginary numbers (i). I've seen both tofu the first two scenarios come up on the GED. Haven't seen or heard of a complex (with an i) yet but that doesn't mean it couldn't happen.
@margaritaalopez1697
@margaritaalopez1697 2 жыл бұрын
So for the experienced worksheet on your site, there were a few errors that kind of confused me and left me questioning my math for way too long lol. Question #3 is missing a variable. So when I attempted to work through the problem the way it's written, I got "no solution" and it's not matching up to the answer posted. I tried adding the missing variable and got the same answer you posted. And then the answer to question #5, is not matching up to the answer I get when I work through the problem. In the answer posted, the number inside the radical is not correct. The number is 13 when it should be 17. I spent 20 minutes trying to rework and redo the problem to match the answer posted only to find out by googling the problem and realizing I was right the whole time and the answer was just a typo lol. Just a heads up for anyone questioning themselves. Don't freak out.
@LightandSaltLearning
@LightandSaltLearning 2 жыл бұрын
I will go check that out and correct it! Thank you for the heads up!
@LightandSaltLearning
@LightandSaltLearning 2 жыл бұрын
All fixed now! Thank you!
@Fiberleo
@Fiberleo 3 жыл бұрын
can u make a video on this type of answer to the divisions i don't get 3/6??? 4/3??? i don't get it
@LightandSaltLearning
@LightandSaltLearning 3 жыл бұрын
Do you mean that you don't understand how the answer to division could be a fraction?
@Fiberleo
@Fiberleo 3 жыл бұрын
@@LightandSaltLearning yeahh
@LightandSaltLearning
@LightandSaltLearning 3 жыл бұрын
Your video is coming out today! Watch for it!
@LightandSaltLearning
@LightandSaltLearning 3 жыл бұрын
@@Fiberleo Here you go, Leo! I was excited to make this one. I think it will help a lot of students! kzbin.info/www/bejne/rYSreaOGgJiKjLs
@kathymclendon9539
@kathymclendon9539 4 жыл бұрын
on this problem , how can I use my calculator to solve. ex . there isn't a = symbol?
@LightandSaltLearning
@LightandSaltLearning 4 жыл бұрын
The "enter" key works as an equal sign in the TI. Expert tip, when using the TI to simplify the quadratic formula, make sure you are in "Mathprint mode", and press the n/d fraction button first, then type in the rest of the expression.
@enderedge7884
@enderedge7884 3 жыл бұрын
2000th
@caseyhartsock2750
@caseyhartsock2750 7 жыл бұрын
FIRST!!!
@richardcoterie8091
@richardcoterie8091 2 жыл бұрын
nooooo
@oddity8332
@oddity8332 6 ай бұрын
Not gonna lie this and inequalities are really confusing me.
@LightandSaltLearning
@LightandSaltLearning 6 ай бұрын
That's ok! Don't feel bad about rewatching videos. Be sure you do one worksheet for each video to test your comprehension.
@denisemaas1338
@denisemaas1338 2 жыл бұрын
inverse inverse inverse......
@LightandSaltLearning
@LightandSaltLearning 2 жыл бұрын
Of the sign?
@denisemaas1338
@denisemaas1338 2 жыл бұрын
yes
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