1除以m²-m-2除以2m²-2计算 等于多少搞错了 是1除以m²-m再-减2除以2m²-2
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![1除以m²-m-2除以2m²-2计算 等于多少搞错了 是1除以m²-m再-减2除以2m²-2](/uploads/image/z/216762-42-2.jpg?t=1%E9%99%A4%E4%BB%A5m%26%23178%3B-m-2%E9%99%A4%E4%BB%A52m%26%23178%3B-2%E8%AE%A1%E7%AE%97+%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91%E6%90%9E%E9%94%99%E4%BA%86+%E6%98%AF1%E9%99%A4%E4%BB%A5m%26%23178%3B-m%E5%86%8D-%E5%87%8F2%E9%99%A4%E4%BB%A52m%26%23178%3B-2)
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1除以m²-m-2除以2m²-2计算 等于多少搞错了 是1除以m²-m再-减2除以2m²-2
1除以m²-m-2除以2m²-2计算 等于多少
搞错了 是1除以m²-m再-减2除以2m²-2
1除以m²-m-2除以2m²-2计算 等于多少搞错了 是1除以m²-m再-减2除以2m²-2
需要确定是哪种,我把两种都写给你,你对照题目选择
1÷(m²-m-2)÷(2m²-2)
=1/[(m-2)(m+1)]÷(2m²-2)
=1/[2(m-2)(m+1)(m²-1)]
1÷[(m²-m-2)÷(2m²-2)]
=(2m²-2)/(m²-m-2)
=[2(m+1)(m-1)]/[(m-2)(m+1)]
=[2(m-1)]/(m-2)