(x-8)(x+8)
(3a-4b)(3a+4b)
x^2-64=x^2-8^2=(x-8)(x+8)
9a^2-16b^2=(3a)^2-(4b)^2=(3a-4b)(3a+4b)
x^2+3x = x(x+3) = x
3a+ax a(3+x) a
x^2-y^2 = (x-y)(x+y) = x+y
x^2-xy x(x-y) x
(x-8)(x+8)
(3a-4b)(3a+4b)
x^2-64=x^2-8^2=(x-8)(x+8)
9a^2-16b^2=(3a)^2-(4b)^2=(3a-4b)(3a+4b)
x^2+3x = x(x+3) = x
3a+ax a(3+x) a
x^2-y^2 = (x-y)(x+y) = x+y
x^2-xy x(x-y) x