分式化简:
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分式化简:
分式化简:
分式化简:
原式=[(x-y)^2-1]/(x-y-1)=[(x-y-1)(x-y+1)]/(x-y-1)=x-y+1
原式=[(x-y)^2-1]/(x-y-1)
=[(x-y)+1][(x-y)-1]/(x-y-1)
=(x-y+1)(x-y-1)/(x-y-1)
=x-y+1
分式化简:
分式化简:
分式化简:
原式=[(x-y)^2-1]/(x-y-1)=[(x-y-1)(x-y+1)]/(x-y-1)=x-y+1
原式=[(x-y)^2-1]/(x-y-1)
=[(x-y)+1][(x-y)-1]/(x-y-1)
=(x-y+1)(x-y-1)/(x-y-1)
=x-y+1