If p(x) = 4X^-3 and r (x) = 1+3x, find each value

Question

If p(x) = 4X^-3 and r (x) = 1+3x, find each value p (x-3) + p(x)

Answer 1

p(x - 3) = 4(x - 3)^-3

p(x - 3) - p(x) = 4(x - 3)^-3 - 4x^-3