计算:[(x-y)(x+y-1)-(x-y)^2-(x+y)(x-y)+x(x+1)]÷(-2y)
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[(x-y)(x+y-1)-(x-y)^2-(x+y)(x-y)+x(x+1)]÷(-2y)=1/2y—x—1/2
咨询记录 · 回答于2022-09-30
计算:[(x-y)(x+y-1)-(x-y)^2-(x+y)(x-y)+x(x+1)]÷(-2y)
[(x-y)(x+y-1)-(x-y)^2-(x+y)(x-y)+x(x+1)]÷(-2y)=1/2y—x—1/2
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