Conversely if you have the roots x 1 and x -3 you can recover the quadratic equation by forming x - 1 x 3 0. X 1 and x -3. This video shows you how to get the quadratic equation for the quadratic function with roots.
That is x2 - sum of rootsx product of roots 0.
1 x2 7x 100 2 x2 9x 18 0 3 x2 22x 40 0 4 x2 14x 13 0 5 x2 8x 16 0 6 x2 9x 0 7 x2 0 8 x2 7x 10 0 9 x2 7 x 440 10 x2 2x 30 11 16x2 16x 30. Ax 2 bx c 0. The solution to the quadratic equation is given by the quadratic formula. X -x 1x -x 2 0.