(m2-2m+1)/(m2-1)÷((m-1)-(m-1)/(m+1)),其中m=根号3
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![(m2-2m+1)/(m2-1)÷((m-1)-(m-1)/(m+1)),其中m=根号3](/uploads/image/z/2709092-20-2.jpg?t=%28m2-2m%2B1%29%2F%EF%BC%88m2-1%29%C3%B7%EF%BC%88%28m-1%29-%EF%BC%88m-1%EF%BC%89%2F%EF%BC%88m%2B1%EF%BC%89%EF%BC%89%2C%E5%85%B6%E4%B8%ADm%3D%E6%A0%B9%E5%8F%B73)
(m2-2m+1)/(m2-1)÷((m-1)-(m-1)/(m+1)),其中m=根号3
(m2-2m+1)/(m2-1)÷((m-1)-(m-1)/(m+1)),其中m=根号3
(m2-2m+1)/(m2-1)÷((m-1)-(m-1)/(m+1)),其中m=根号3
(m^2-2m+1)/(m^2-1)÷[(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+1)÷[(m^2-1)/(m+1)-(m-1)/(m+1)]
=(m-1)/(m+1)÷{[(m^2-1-(m-1)]/(m+1)}
=(m-1)/(m+1)÷{[m^2-1-m+1)]/(m+1)}
=(m-1)/(m+1)÷{[m^2-m)]/(m+1)}
=(m-1)/(m+1)÷{m(m-1)/(m+1)}
=(m-1)/(m+1)*(m+1)/[m(m-1)]
=1/m
=1/√3
=√3/3
就这样了,看不懂可以问我
(m^2-2m+1)/(m^2-1)÷[(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+1)÷[(m^2-1)/(m+1)-(m-1)/(m+1)]
=(m-1)/(m+1)÷{[(m^2-1-(m-1)]/(m+1)}
=(m-1)/(m+1)÷{[m^...
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(m^2-2m+1)/(m^2-1)÷[(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+1)÷[(m^2-1)/(m+1)-(m-1)/(m+1)]
=(m-1)/(m+1)÷{[(m^2-1-(m-1)]/(m+1)}
=(m-1)/(m+1)÷{[m^2-1-m+1)]/(m+1)}
=(m-1)/(m+1)÷{[m^2-m)]/(m+1)}
=(m-1)/(m+1)÷{m(m-1)/(m+1)}
=(m-1)/(m+1)*(m+1)/[m(m-1)]
=1/m
=1/√3
=√3/3
收起
条件不够吧