[tex]1). \frac{(x+1)^2}{3} - \frac{(x-2)(x+2)}{4} = \frac{(x-2)^2-6}{12} - \frac{5x+2}{6} \\ 4(x+1)^2-3(x-2)(x+2)=(x-2)^2-6-2(5x+2) \\ 4(x^2+2*x*1+1^2)-3(x^2-4)=x^2-2*x*2+2^2-6-10x-4 \\ 4(x^2+2x+1)-3x^2+12=x^2-4x+4-6-10x-4 \\ 4x^2+8x+4-3x^2+12=x^2-4x+4-6-10x-4 \\ 4x^2-3x^2-x^2+8x+4x+10x=4-6-4-4-12 \\ 22x=-22 \\ x=- \frac{22}{22} \\ x=-1[/tex]
[tex]2).y( \sqrt{3} - \sqrt{2} )+y(2 \sqrt{3} +3 \sqrt{2} )-4 \sqrt{3} y+4 \sqrt{2} y= \\ = \sqrt{3} y- \sqrt{2} y+2 \sqrt{3} y+3 \sqrt{2} y-4 \sqrt{3} y+4 \sqrt{2} y=- \sqrt{3} y+6 \sqrt{3} y[/tex]