Question

solve the quadratic equation by factorization method:
x2+x-20=0​

Answer 1

Answer:

x² + x -20= 0

= x² + 5x - 4x -20 =0

= x(x + 5 ) - 4 ( x + 5 ) = 0

= ( x+ 5 ) ( x - 4 ) = 0

x+5 = 0 and x- 4 = 0

x = -5 x = 4