数学计算!
1.计算x+1/(x-1)-(3x-3)/(x+1)=2
参考答案:x+1/(x-1)-(3x-3)/(x+1)=2
(x+1)(x+1)-(3x-3)(x-1)=2(x+1)(x-1)
x^2+2x+1-3x^2+6x-3=2x^2-1
4x^2-8x+1=0
(2x-1)^2=0
2x-1=0
x=1/2
1.计算x+1/(x-1)-(3x-3)/(x+1)=2
参考答案:x+1/(x-1)-(3x-3)/(x+1)=2
(x+1)(x+1)-(3x-3)(x-1)=2(x+1)(x-1)
x^2+2x+1-3x^2+6x-3=2x^2-1
4x^2-8x+1=0
(2x-1)^2=0
2x-1=0
x=1/2