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descompuneti an factori expresia x³-9x-2x²+18

Răspuns :

x²(x-2)-9(x-2)=(x²-9)(x-20=(x+3)(x-3) (x-2)
as simple as that!!!
x³-9x-2x²+18
x•(x²-9) -2(x²-9)
(x²-9) •(x-2)
(x-3) •(x+3) •(x-2)