5x 2 8x 1 0 July 8, 2019 16 32 64 128 5x 1 )-( 2 8x при x 0 75 8x 3 2x 2 5x 1 0 X 4 5x 3 8x 2 5x 1 0 8x 2 5x 1 0 quadratic formula 2 5x 1 4 5 8x 0 25 x 0 5x 1 4x 2 8x 2x 5x8 2 5x 2 – 8x = 0