X 3 3x 2 13x 15 x 5 July 8, 2019 16 32 64 128 Which expression is equivalent to x 2 3x 3 2x 2 13x 15 )/( x 5 Show that x 5 is a factor of x 3 3x 2 13x 15 13x - 15 - 3(3 + 2x) = - 3