X 2 5x 25 4 July 8, 2019 16 32 64 128 X 2 5x 25 4 0 X 2 5x 25 4 complete the square X 2 5x 25 4 factorise X 2 + 5x + frac 25 4 2 x 4 )+ 5x 5 25 X 5x 25 2x 3 x 2 3x 40
