👤

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



Răspuns :

[tex]a^{-2}= \frac{1}{a^2} [/tex]

[tex]= \frac{1}{(x-1)^2}= \frac{1}{x^2-2x+1} [/tex]
[tex]( x-1)^{-2}[/tex]=[tex] \frac{1}{(x-1)^{2}}[/tex]