Question

(2x+6)(2x-6)=(2x+9)(3x-4)

Answer 1

(2x+6)(2x-6)=(2x+9)(3x-4)
4x^2-12x+12x-36=6x^2-8x+27x-36
4x^2-36=6x^2+19x-36
0=6x^2-4x^2+19x+36-36
0=2x^2+19x
0=x (2x+19)
x=0 2x+19=0
2x= -19
x= -19/2