X 3 8x 2 19x 12 July 8, 2019 16 32 64 128 X 3 8x 2 19x 12 0 X 3 8x 2 19x 12 factorise X 3 8x 2 19x 12 x 1 Factor x 3 8x 2 19x 12 Solve x 3 8x 2 19x 12 0 Check whether x 1 is a factor of x 3 8x 2 19x 12 2^x + 8^x = 130
