Question

Equis al cuadrado mas equis es igual a 56

Answer 1

x²+x=56
x²+x-56=0
(x+8)(x-7)=0
x+8=0 ∨ x-7=0
   x=-8       x=7

Answer 2

x²+x=56
x²+x-56=0
(x+8)(x-7)=0
x+8=0 ∨ x-7=0
   x=-8       x=7