计算:1.y/4x²-1/12y²+1/6xy 2.3/x-6/1-x-x+5/x²-x3.x/x-y×y²/x+y-x四次方y/x四次方-y四次方÷x²/x²+y²解方程:1.x-1/(x-2)+1=1/2-x2.x+1/x-1-4/x²-1=13.1/x+3-2/3-x=1/x²-9
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![计算:1.y/4x²-1/12y²+1/6xy 2.3/x-6/1-x-x+5/x²-x3.x/x-y×y²/x+y-x四次方y/x四次方-y四次方÷x²/x²+y²解方程:1.x-1/(x-2)+1=1/2-x2.x+1/x-1-4/x²-1=13.1/x+3-2/3-x=1/x²-9](/uploads/image/z/806115-3-5.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A1.y%2F4x%26%23178%3B-1%2F12y%26%23178%3B%2B1%2F6xy+2.3%2Fx-6%2F1-x-x%2B5%2Fx%26%23178%3B-x3.x%2Fx-y%C3%97y%26%23178%3B%2Fx%2By-x%E5%9B%9B%E6%AC%A1%E6%96%B9y%2Fx%E5%9B%9B%E6%AC%A1%E6%96%B9-y%E5%9B%9B%E6%AC%A1%E6%96%B9%C3%B7x%26%23178%3B%2Fx%26%23178%3B%2By%26%23178%3B%E8%A7%A3%E6%96%B9%E7%A8%8B%EF%BC%9A1.x-1%2F%EF%BC%88x-2%EF%BC%89%2B1%3D1%2F2-x2.x%2B1%2Fx-1-4%2Fx%26%23178%3B-1%3D13.1%2Fx%2B3-2%2F3-x%3D1%2Fx%26%23178%3B-9)
计算:1.y/4x²-1/12y²+1/6xy 2.3/x-6/1-x-x+5/x²-x3.x/x-y×y²/x+y-x四次方y/x四次方-y四次方÷x²/x²+y²解方程:1.x-1/(x-2)+1=1/2-x2.x+1/x-1-4/x²-1=13.1/x+3-2/3-x=1/x²-9
计算:1.y/4x²-1/12y²+1/6xy 2.3/x-6/1-x-x+5/x²-x
3.x/x-y×y²/x+y-x四次方y/x四次方-y四次方÷x²/x²+y²
解方程:1.x-1/(x-2)+1=1/2-x
2.x+1/x-1-4/x²-1=1
3.1/x+3-2/3-x=1/x²-9
计算:1.y/4x²-1/12y²+1/6xy 2.3/x-6/1-x-x+5/x²-x3.x/x-y×y²/x+y-x四次方y/x四次方-y四次方÷x²/x²+y²解方程:1.x-1/(x-2)+1=1/2-x2.x+1/x-1-4/x²-1=13.1/x+3-2/3-x=1/x²-9
解方程:1.x-1/(x-2)+1=1/2-x
X-1+(X-2)=-1
2X=2
X=1
经检验X=1是原方程的解.
2.x+1/x-1-4/x²-1=1
(X+1)^2-4=X^2-1
2X=2
X=1
X=1是增根,
原方程无解.
3.1/x+3-2/3-x=1/x²-9
(X-3)+2(X+3)=1
3X=-2
X=-2/3
经检验是原方程的解.