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Aduceti la forma cea Mai simpl a expresia:(x+2)la puterea a 2+3x(x-3)-(2x-1)(3x+2)
Va rog mult !!!


Răspuns :

(x+2)²+3x(x-3)-(2x-1)(3x+2)=
x²+4x+4+3x²-9x-(2x-1)(3x+2)=
4x²-5x+4-(6x²+4x-3x-2)=
4x²-5x+4-(6x²+x-2)=
4x²-5x+4-6x²-x+2=
-2x²-6x+6=2(-x²-3x+3) ⇒forma simpla a expresiei;