雁过惊秋
幼苗
共回答了13个问题采纳率:100% 举报
(x+1)分之1-(x²-6x+9)分之(3-x)÷(x-3)分之(x²+x)
=(x+1)分之1-(x-3)²分之[-(x-3)]÷(x-3)分之[x(x+1)]
=(x+1)分之1+(x-3)分之1×[x(x+1)]分之(x-3)
=(x+1)分之1+[x(x+1)]分之1
=[x(x+1)]分之x+[x(x+1)]分之1
=[x(x+1)]分之(x+1)
=x分之1
=根号2分之1
=2分之根号2
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1年前
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