Casio 計算機(Formula-01) 做 Factorization (Casio fx-50FH 系列)

[@yerengg4362]

you’ve saved my life :))) post more :)))

[@jimchu5604]

Thank you very much You have saved my daughter’s life. 😁😁😁

[@cokeaholic._.6457]

每次大考前都來溫習一次\(^o^)/~

[@kingaceu3752]

Metoo

[@NoncppandPythoner]

+1

[@sean_6483]

me three

[@bddb9826]

Mid term test 有很大幫助😄

[@euehrhjkffshhevfjjvkfkd]

so good it helps a lot, thank you so much!!!

[@Stadler815]

this gives me nostalgia in being taught math in chinese, now its fully english

[@Stadler815]

bros saying it like hes my teacher

[@CTHtransport]

Yes he is, what’s up?

[@haowiyy9323]

第二題例子點醒我 thx

[@ppoinakami3090]

如果唔係全部二次方，係一個二次方，一個三次方既話點計？

[@ppoinakami3090]

例如4x^3 - 6x^2y

[@2c17wanchunmingmichael-pb8ej]

🎉🎉🎉🎉

[@Colskiiii214]

No 11 why didn't you include the 8 in the 2ab part? Thank you

[@chericiu]

don't understand your question fully. 1 , -2 , -8 are the three numbers when it's in descending powers of "3a+4". so we input 1, -2, -8 to get the answers.

[@17-18畢業生黃世隆]

為什麼4x+4不可？

[@chericiu]

這個 program 只做 quadratic form (x 二次方那種) 及其變化形式。 4x + 4 抽 common factor "4" 便可。

[@save_soil2750]

Omg thank you so much!

[@thug_penguin4154]

Thank

[@mepro7187]

very good video

[@hugolam7808]

thanks

[@獨角獸的眼淚]

👍🏻👍🏻👍🏻

[@二白-z2q]

sorry for disturb, 請問 81X^3-3y^3 有冇得計thx

[@chericiu]

呢個就沒有了，要靠自己努力了

[@lofeiwong1426]

咁長除式呢？可唔可用撳機？

[@chericiu]

webcal.freetzi.com/casio.fx-50FH/fx-50F_Plus.htm 可以參考 B3, B4, B5

[@lofeiwong1426]

@@chericiu 咁我用fx50-H II呢個型號計算機

[@JungKookOfficiaI]

good video thank you

[@chanjingo_o5843]

想問吓點解第七題要先抽個負號？負號算係common factor？

[@chericiu]

可以當係既. 當抽 "負1"

[@hoitingwong4966]

點解要變倒數？😵‍💫

[@terrencelam6341]

Y i have math error

[@chericiu]

if you see Math Error, then the expression cannot be factorized. (的確有一些東西是無法 factorize 的. e.g. x² + x + 1)

[@terrencelam6341]

多謝

[@jackc1114]

可唔可以將個答案抄返落個cross method度

[@chericiu]

一定可以的。老師要求寫 cross method 個 step?

[@lofision1018]

我這邊還有一些題型沒有啊⋯⋯還是我搞錯了？xy-4y二次-（x-4y）二次，還是根本不是這種東西？

[@chericiu]

不好意思, 之前 miss 了你 comment 這個不是這類. 是抽 common factor 和 grouping term. xy - 4y² - (x - 4y)² = y(x - 4y) - (x - 4y)² (頭兩項抽 y 做 common factor) = (x - 4y)(y - (x - 4y)) (抽 (x - 4y) 為 common factor) = (x - 4y)(y - x + 4y) = (x - 4y)(5y - x)

[@bddb9826]

Thx!

[@lofeiwong1426]

有冇字幕？

[@chericiu]

不好意思, 不太懂做

[@_Rito_art_]

I wonder which kind of people disliked this video...

[@abl8012]

omg thxxxx

[@DaveLau0313]

咁帶分數呢

[@chericiu]

先轉返做假分數. 可按 "shift a b/c" 如果想永久自動顯示假分數, 就按 shift mode --> --> 2 (d/c)

[@DaveLau0313]

👌 明了，謝謝

[@chericiu]

@@DaveLau0313 出 extra 講假分數應該未必會了，我儘量在這裏答你，睇下你明唔明吧。 Example: Factorize 12x² - 13x - 55. 按 formula-01 會出到 2.75 按"a b/c" 變成 11/4 Factor 是 (4x - 11) -1.666... 按"a b/c" 變成 -5/3 Factor 是 (3x + 5) so the answer is 12x² - 13x - 55 = (4x - 11)(3x + 5)

[@yisong8108]

学校要求写step

[@aik936]

那你怎么办

[@susjohn6808]

so?

[@ontwth5782]

妙!

[@klemenhung9678]

Thanks