Question

y^2+12y+27=0

solve by factoring can anyone actually explain how to work the problem out?

Answer 1

(y+9)(y+3)=0 ===> y=-9 , or y=-3

Answer 2

since the last number in the equation is positive that means that both sets of parenthisis will be as well.
(y+3)(y+9)
Look at the factors of 27 and figure out which ones add up to give you 12