Question

a) x-1 = (x+1)(x-1)porfis lo necesito​

Answer 1

espero te ayude ;) jkslsls

Answer 2

Respuesta:

saludos...

Explicación paso a paso:

$x-1=\left(x+1\right)\left(x-1\right)\\\\\\x-1=x^2-1\\\\\\x^2-1=x-1\\\\\\x^2-1+1=x-1+1\\\\\\x^2=x\\\\\\x^2-x=x-x\\\\\\x^2-x=0\\\\\\x_{1,\:2}=\frac{-\left(-1\right)\pm \sqrt{\left(-1\right)^2-4\cdot \:1\cdot \:0}}{2\cdot \:1}\\\\\\x_{1,\:2}=\frac{-\left(-1\right)\pm \:1}{2\cdot \:1}\\\\\\x_1=\frac{-\left(-1\right)+1}{2\cdot \:1},\:x_2=\frac{-\left(-1\right)-1}{2\cdot \:1}\\\\\\x=1,\:x=0$