x + x = 2x. Similarly, x^3 + x^3 = 2(x^3)
X to the 6
7
(x + y)(x + y)(x + y)
no
x3 + x = x2(x + 1)
x(x^2 + 1)
x(x2 + 36)
x(x + 9)(x + 1)
x(x + 9)(x + 1)
x^3 + y^3 = (x + y)(x^2 - xy + y^2)
526
If that's 5x2, it factors to (x + 5)(x2 + 1)
x(x4+x3+x2+x+1)
x(x2+5x+6)