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a fost răspuns

x(x+5)-(x-2)(x+3)=3(x+1)-11

Răspuns :

x2+5x-(x2+3x-2x-6)=3x+2-11
x2+5x-x2-3x+2x+6x=3x+2-11
(x la put. a -2-a se reduce) ...si ramane:
5x-3x+2x+6x=3x+2-11
7x=-9
x= -9/7
X2+5X-(X2+3XX2X6)=3X2+1
X2+5X-X2+3X+2X=3X+2
(X.A-2A )
5X-3X+2X+6X=3X+2
7X=9
X=-9/7

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