Question

find the roots of x2+2x-143 using quadratic formula​

Answer 1

${x}^{2} + 2x - 143 \\ = {x}^{2} + 13x - 11x - 143 \\ = x(x + 13) - 11(x + 13) \\ = (x - 11)(x + 13) = 0 \\ x = - 13orx = 11$