Question

factor 7y^2+16y-15

Answer 1

Hint: 7 is prime.

Answer 2

Hint: This quadratic, as you may expect (since you've been asked to factorize it), has integer roots.

Answer 3

Hint:
\[(7y+a)(y+b)\]Consider expanding this and comparing to the equation you already have.

Answer 4

Thank you I still don't understand.

Answer 5

\[(7y + a)(y + b) = 7y^2 + (a + 7b)y + ab\]