Question

Folosind descompunerea in factori, aratati ca:
2+x-2x²-x³ = (x+2) (1-x) (1+x)

Fie expresia:
E(x)$(\frac{x}{ x^{2} -x} + \frac{x+2}{2+x-2 x^{2} -x'''} + \frac{ x^{2} }{ x^{2} +x} ) * ( x- \frac{1}{x} )$

unde e x''' inseamna x³

Answer 1

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