4 25x 2 0 July 8, 2019 16 32 64 128 X 4 25x 2 0 25x 4 4x 2 0 X 4 25x 2 144 0 4x 4 25x 2 36 0 16x 4 25x 2 9 0 25x 2 20x 4 0 25x 2 20x 4 0 discriminant X 4 25x 2 60x 36 0 9x 4 25x 2 0 25x 2 4 0 solve by factoring 25x 2 kx 4 0 25x 4 30x 3 5x 2 0 25x 2 10x 4 0 25x 4 61x 2 36 0 25x 4 26x 2 1 0
