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LILIANSP
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(x+5)(x+2)-3(4x-3)=(x-5)la puterea 2

Răspuns :

Matepentrutoti
(x+5)(x+2)-3(4x-3)=(x-5)²
x²+2x+5x+10-12x+9=x²-10x+25
x²+2x+5x-12x-x²+10x=25-10-9
5x=6
x=6/5


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