Question

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

Answer 1

a) 2x+2-6+3x=x+6x+3
 2x+3x-x-6x=-2+6+3
-2x=7
x=-\frac{7}{2}