Question

(x – 4) 2 = (x – 4) (x + 4)

Answer 1

Respuesta:

X= 4 x= -2

Explicación paso a paso:

Restar (x-4)(x+4)

(x-4)x2-(x-4)(x+4)=(x-4)(x+4)-(x-4)(x+4)

Simplificar

(x-4)x2-(x-4)(x+4)=0

Factorizar (x-4) x 2-(x-4)(x+4)= -(x-4)(x+2)

-(x-4)(x+2)=0

Usando Factor Cero

X-4=0 (o) X+2=0

Resolver

X-4=0 X=4

X+2=0 X= -2

X=4 X= -2