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Cum se descompune X la 2+2x-3???va rog repede

Răspuns :

x²+2x-3=x²+3x-x-3=x(x+3)-(x+3)=(x-1)(x+3)
x²+2x-3
Descompunem astfel :
x²-x+3x-3
Dăm factor comun :
x(x-1)+3(x-1) , dam iar:
(x-1)(x+3)