(6x+12)/(x^2+4x+4)+(4-x^2)/(x^2-4x+4)=(x^2)/(4-x^2)哎呦亲们帮帮忙吧.我受不了了

x=8

化简左式：(6x+12)/(x^2+4x+4)+(4-x^2)/(x^2-4x+4)=6(x+2)/(x+2)²+(2+x)(2-x)/(x-2)²=6/(x+2)-(x+2)/(x-2)=6(x-2)/[(x+2)(x-2)]-(x+2)²/[(x+2)(x-2)]=6(x+2)/(x²-4)-(x+2)²/(x²-4)=(2...