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Lore000Lore
a fost răspuns

Descompuneti
a) 2x²+x-3
b)3x²-x-2
c)2x²-x-15

Răspuns :

Renatemambouko
a) 2x²+x-3=2x²-2x+3x-3=2x(x-1)+3(x-1)=(x-1)(2x+3)
b)3x²-x-2=3x²-3x+2x-2)=3x(x-1)+2(x-1)=(x-1)(3x+2)
c)2x²-x-15 =2x²-6x+5x-15=2x(x-3)+5(x-3)=(x-3)(2x+5)

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