m的2次方-m分之1+2m的2次方-2分之m-5计算
m的2次方-m分之1+2m的2次方-2分之m-5计算
数学人气:335 ℃时间:2020-03-18 17:04:46
优质解答
(m²-m)分之1 + (2m²-2)分之(m-5)=[m(m-1)]分之1 + [2(m-1)(m+1)]分之(m-5)=[2m(m-1)(m+1)]分之[2(m+1)+(m-5)m]=[2m(m-1)(m+1)]分之(m²-3m+2)=[2m(m-1)(m+1)]分之(m-2)(m-1)=[2m(m+1)]分之(m-2)...
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