4x 2 10x 3 0 July 8, 2019 16 32 64 128 4x 2 10x 3 0 complete the square X 3 4x 2 10x 40 0 Cho 4x 2 10x 3 0 4x 3 10x 2 6x 0 − 10x 3 − 4x 2 10x 4 0