How do you factor 12y^2-6y-90

Step-by-step explanation:

First, factor out the common term of 6:

To factor :

Multiply the coefficient of by the constant:

Now find factors of -30 that sum to the coefficient of , i.e. -1

Factors of 30:  1, 2, 3, 5, 6, 10, 15, 30

So factors of -30 that sum of -1 are:  -6 and 5

Rewrite the middle term of as :

Factor each pair of terms:

Factor out the constant term:

Therefore, the final factorization is:

the answer is b.

step-by-step explanation: