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Rezolvati ecuatiile
a)2(x+1)-3(2-x)=x+3(2x+1)
b)Aratati ca a=-2 e solutie a ecuatiei (2x-1)²+4x=-2x²+9-8x
c) (x-2)²-(x-1)(3-2x)=3(x+3)+25