Solve the quadratic equation using completing the square

Last updated: 7/21/2022

Solve the quadratic equation using completing the square: x2 = -2x + 21 x=-1+ √21 or x = -1- √21 x=1+ √21 or x = 1 - √21 x=-1+ √22 or x = -1 - √22 x = 1 + √22 or x = 1 - √/22