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x la puterea a 2-a+x-2?


Răspuns :

x²+x-2=x²-x+2x-2=x(x-1)+2(x-1)=(x+2)(x-1)
x²+x-2=
x²-x+2x-2=
x(x-1)+2(x-1)=
(x+2)(x-1)
credca asa(nustiu ceti cere si deaia am facut cum mam priceput)