Answer:
(3y - 4)(y + 3)
Explanation:
Expression: 3y² + 5y - 12
My preferred method of factoring is to find two numbers that add up to bx and has the product of acx² (when ax² + bx + c), substituting those numbers in for bx, and factoring that way. So here;
Numbers: -4y, 9y
Substitute: 3y² - 4y + 9y - 12
Factor: (3y - 4)(y + 3)