28 Rezolvați va rog acest exercițiu rapid
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Răspuns:
(5x-3)(x+2)=(2x+26)(x-1)
5x²+10x-3x-6=2x²-2x+26x-26
5x²-2x²+7x-24x+20=0
3x²-17x+20=0
x=[-b±√(b²-4ac)]/2
x=[-17±√(-17)²-4×3×20]/6
x=(17-7)/6=>x=10/6=>x=5/3
x=(17+7)/6=>x=24/6=>x=4