Question

the solutions of the quadratic equation x2+x-20=0 by factorization is ___​

Answer 1

Solution:

» x² + x - 20 = 0

» x² + 5x - 4x - 20 = 0

» x (x + 5) - 4 (x + 5) = 0

» (x - 4) (x + 5) = 0

» x = 4 or x = - 5