Question

Despeje de x
(X+2)²-x²=60

Answer 1

(x+2)2−x2−60=0

(x+2)(x+2)−x2−60=0

xx+x⋅2+2x+2⋅2−x2−60=0

x2+4x+4−x2−60=0

4x−56=0

X=56/4

X=14