M^2-2M+1/M^2-1除以(M-1-M-1/M+1)化简

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M^2-2M+1/M^2-1除以(M-1-M-1/M+1)化简M^2-2M+1/M^2-1除以(M-1-M-1/M+1)化简M^2-2M+1/M^2-1除以(M-1-M-1/M+1)化简原式=[(m&

M^2-2M+1/M^2-1除以(M-1-M-1/M+1)化简
M^2-2M+1/M^2-1除以(M-1-M-1/M+1)化简

M^2-2M+1/M^2-1除以(M-1-M-1/M+1)化简
原式=[(m²-2m+1)/(m²-1)]÷[m-1-(m-1)/(m+1)]
={(m-1)²/[(m+1)(m-1)]}÷{[(m-1)(m+1)-(m-1)]/(m+1)}
=[(m-1)/(m+1)]÷[m(m-1)/(m+1)]
=[(m-1)/(m+1)]×{(m+1)/[m(m-1)]}
=1/m