一计算:①-1²+(2013-π)"0次方""+(-(1/2))"-2次方"-1|2|②1÷(1/2x)-1/(x+y)((x+y/2x)x-y二解方程1/(x-1)=-(x)/(1-x)
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![一计算:①-1²+(2013-π)](/uploads/image/z/4312941-69-1.jpg?t=%E4%B8%80%E8%AE%A1%E7%AE%97%EF%BC%9A%E2%91%A0-1%26%23178%3B%2B%282013-%CF%80%29%220%E6%AC%A1%E6%96%B9%22%22%2B%28-%281%2F2%29%29%22-2%E6%AC%A1%E6%96%B9%22-1%7C2%7C%E2%91%A11%C3%B7%281%2F2x%29-1%2F%28x%2By%29%28%28x%2By%2F2x%29x-y%E4%BA%8C%E8%A7%A3%E6%96%B9%E7%A8%8B1%2F%28x-1%29%3D-%28x%29%2F%281-x%29)
一计算:①-1²+(2013-π)"0次方""+(-(1/2))"-2次方"-1|2|②1÷(1/2x)-1/(x+y)((x+y/2x)x-y二解方程1/(x-1)=-(x)/(1-x)
一计算:
①-1²+(2013-π)"0次方""+(-(1/2))"-2次方"-1|2|
②1÷(1/2x)-1/(x+y)((x+y/2x)x-y
二解方程
1/(x-1)=-(x)/(1-x)
一计算:①-1²+(2013-π)"0次方""+(-(1/2))"-2次方"-1|2|②1÷(1/2x)-1/(x+y)((x+y/2x)x-y二解方程1/(x-1)=-(x)/(1-x)
.一计算:
①-1²+(2013-π)"0次方""+(-(1/2))"-2次方"-1+|2|
=-1+1+4-1+2
=5
②1÷(1/2x)-1/(x+y)((x+y/2x)x-y
=2x-1/(2x)*x-y
=2x-1/2-y
二解方程
1/(x-1)=-(x)/(1-x)
方程二边同乘上x-1
1=x
经检验,X=1不 是方程的根,则原方程无解
第二题方程无解
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