化简括号m-1括号括号m的n-2次方+m的n-1次方+m的n次方-2+n+1括号
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括号m-1括号括号m的n-2次方+m的n-1次方+m的n次方-2+n+1括号
=(m-1)(m^(n-2)+m^(n-1)+m^n-2+n+1)对吗?
=(m-1)(m^(n-2)+m^(n-1)+m^n+n-1)
=m^(n-1)+m^(n)+m^(n+1)+nm-m-(m^(n-2)+m^(n-1)+m^n+n-1)
=m^(n-1)+m^n+m^(n+1)+nm-m-m^(n-2)-m^(n-1)-m^n-n+1
=m^(n-1)-m^(n-1)+m^n-m^n+m^(n+1)+nm-m-m^(n-2)-n+1
=m^(n+1)-m^(n-2)+nm-m-n+1
=m^(n+1)-m^(n-2)+(nm-m)-(n-1)
=m^(n+1)-m^(n-2)+m(n-1)-(n-1)
=m^(n+1)-m^(n-2)+(m-1)(n-1)
=(m-1)(m^(n-2)+m^(n-1)+m^n-2+n+1)对吗?
=(m-1)(m^(n-2)+m^(n-1)+m^n+n-1)
=m^(n-1)+m^(n)+m^(n+1)+nm-m-(m^(n-2)+m^(n-1)+m^n+n-1)
=m^(n-1)+m^n+m^(n+1)+nm-m-m^(n-2)-m^(n-1)-m^n-n+1
=m^(n-1)-m^(n-1)+m^n-m^n+m^(n+1)+nm-m-m^(n-2)-n+1
=m^(n+1)-m^(n-2)+nm-m-n+1
=m^(n+1)-m^(n-2)+(nm-m)-(n-1)
=m^(n+1)-m^(n-2)+m(n-1)-(n-1)
=m^(n+1)-m^(n-2)+(m-1)(n-1)
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