Question

y2+7y-18 pls factorise asap

Answer 1

Answer:

this is the answer of your question only.

Answer 2

$\huge \bf \pink{solution}$

We are given following mathematical expression for factorization

y² - 7y - 18

Since

y²×-18 = -18y²

So we have to write -7y into two parts in such a way that

product of them is equal to -18y² and addition of them is equal to -7y

Thus

We make following parts

-7y = - 9y + 2y

See

-9y×2y = -18y²

Hence

The expression becomes

y² - 7y - 18 = y² - 9y + 2y - 18

                  = y(y - 9) + 2(y - 9)

                  = (y - 9)(y + 2)

So

y² - 7y - 18 = (y - 9)(y + 2)  

Thus factorization of y² - 7y - 18 is equal to (y - 9)(y + 2)

$<marquee scrollamount = 600>$

$\huge \green{k047}$