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Cum descompun in produs de factori x la a patra -8x?

Răspuns :

x⁴-8x=

x•(x³-8)=

x•x³-2³=

x•(x-2)•(x²+x×2+2²)=

x•(x-2)•(x²+2x+4)

x^4 - 8x = x(x^3 - 8) = x(x - 2)(x^2 + 2x + 4) = x (x -2)(x + 2)^2