(x-3)²=21计算?
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计算(x-3/x^2-1)-(2/1+x)过程=(x-3)/(x+1)(x-1)-2(x-1)/(x+1)(x-1)=(x-3-2x+2)/(x+1)(x1)=(-x-1)/(x+1)x-1)=(x+3)/(x+2)-(x+1)-(x-1)x+1/(x-1)
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计算(x-3/x^2-1)-(2/1+x)过程=(x-3)/(x+1)(x-1)-2(x-1)/(x+1)(x-1)=(x-3-2x+2)/(x+1)(x1)=(-x-1)/(x+1)x-1)=(x+3)/(x+2)-(x+1)-(x-1)x+1/(x-1)
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计算(x-3,x^2-1)-(2,1,x)过程=(x-3)/(x)
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=(x-3)/(x+1)(x-1)-2(x-1)/(x+1)(x-1)
=(x-3-2x+2)/(x+1)(x-1)
=(-x-1)/(x+1)(x-1)
=-(x+1)/(x+1)(x-1)
=-1/(x-1)
=1/(1-x)
=(x-3-2x+2)/(x+1)(x-1)
=(-x-1)/(x+1)(x-1)
=-(x+1)/(x+1)(x-1)
=-1/(x-1)
=1/(1-x)
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=(x-3)/(x+1)(x-1)-2(x-1)/(x+1)(x-1)
=(x-3-2x+2)/(x+1)(x-1)
=(-x-1)/(x+1)(x-1)
=-(x+1)/(x+1)(x-1)
=-1/(x-1)
=1/(1-x)
=(x-3-2x+2)/(x+1)(x-1)
=(-x-1)/(x+1)(x-1)
=-(x+1)/(x+1)(x-1)
=-1/(x-1)
=1/(1-x)
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