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Descpumerea in fractori ;x²+2x-3

Răspuns :

x²+2x-3=x²+3x-x-3=x(x+3)-(x+3)=(x+3)(x-1)
x²+2x-3=
(x-1)(x+3)=x²+3x-x-3⇒
x²+2x-3
sucees