Factor -9x^2-36x-36 please.
Tricky Trinomial-9x^2-36x-36(-9x^2-18x)(-18x-36)-9x(x+2)-18(x+2)=(-9x-18)(x+2)
factor out -9-9(x^2+4x+4)what 2 numbers multiply to 4 and add to 4 2 and 2-9(x+2)(x+2)
