Question

Factor completely 9xy + 36x − 10y – 40. Prime (y − 4)(9x − 10) (y + 4)(9x + 10) (y + 4)(9x − 10)

Answer 1

`9xy+36x-10y-40=9x(y+4)-10(y+4)=(y+4)(9x-10)`

Answer 2

(y+4)(9x-10)

Explanation:

The given expression is

`9xy+36x-10y-40`

Make groups as shown below

`(9xy+36x)+(-10y-40)`

Now, take GCF from each group

`9x(y+4)-10(y+4)`

Factored out the common term

`(9x-10)(y+4)`

Therefore, the factored form is given by (y+4)(9x-10)