(x-7)(x+9)-(x-6)(x+6)=17
x^2-7x+9x-63-(x^2-36)=17
x^2+2x-63-x^2+36=17
2x-27=17
2x=17+27
2x=44
x=44/2
x=22
x^2+2x-63-x^2+36-17=0
2x-63+36-17=0
2x-44=0
(x-7)(x+9)-(x-6)(x+6)=17
x^2-7x+9x-63-(x^2-36)=17
x^2+2x-63-x^2+36=17
2x-27=17
2x=17+27
2x=44
x=44/2
x=22
(x-7)(x+9)-(x-6)(x+6)=17
x^2+2x-63-x^2+36-17=0
2x-63+36-17=0
2x-44=0
x=44/2
x=22