Simplify dfracx2−72x−8\\dfrac{x^2 - 72}{x - 8}dfracx2−72x−8 for xneq8x \\neq 8xneq8
x−9x - 9x−9
x−8x - 8x−8
x+8x + 8x+8
x+9x + 9x+9