Question

Cum se efectueaza (x-1) la puterea ,,-2,,

Answer 1

$a^{-2}= \frac{1}{a^2}$

$= \frac{1}{(x-1)^2}= \frac{1}{x^2-2x+1}$

Answer 2

$( x-1)^{-2}$=$\frac{1}{(x-1)^{2}}$