(x-3)(x+9)=-27
Simplify the left side by multiply each pair of parenthesis:
x^2 + 6x -27 = -27
Add 27 to both sides:
x^2 + 6x = 0
Factor X out of each term:
x(x+6) = 0
Set x equal t o zero"
x= 0
Set x+6 equal to zero and solve for x:
x +6 = 6
x = -6
The solution is X = 0 and -6