[tex]a)(2x+3)^2+7=4*(x-2)^2\\
4x^2+12x+9+7=4*(x^2-4x+4)\\
4x^2+12x+16=4x^2-16x+16\\
4x^2-4x^2+12x+16x=16-16\\
0+28x=0\\
x=28:0\\
\boxed{x=0}\\\\\\
b)(3x-4)^2+20=5*(x+1)^2+(2x-3)^2\\
9x^2-24x-16+20=5*(x^2+2x+1)+4x^2-12x+9\\
9x^2-24x+4=5x^2+10x+5+4x^2-12x+9\\
9x^2-5x^2-4x^2-24x-10x+12x=5+9-4\\
-22x=10\\
x= \frac{-22}{10}\\
\boxed{x=-2,2} [/tex][tex]c)(x+2)(3x+2)-3x=2x^2+(x+1)^2\\
3x^2+2x+6x+4-3x=3x^2+x^2+2x+1\\
3x^2-3x^2-x^2+2x+6x-3x-2x=1-4\\
-x^2-3x=-3===\ \textgreater \ \ \textgreater \ ecuatia~ nu~ are ~solutie!!![/tex]