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Descompuneti in factori : a) 2x²+8x  b) (x-2)(x+1)+(x-2)² 

Răspuns :

a) 2x²+8x=2x(x+4) b) (x-2)(x+1)+(x-2)²=(x-2)[x+1+(x-2)]=(x-2)[x+1+x-2]=(x-2)(2x-1)