-2K+2/k+1 怎么转换成(4/k+1)-2 - 知识问答

-2K+2/k+1 怎么转换成(4/k+1)-2

1个回答

(-2K+2) / (k+1)
=(-2k-2+4) / (k+1)
=[-2(k+1) +4] / (k+1)
= -2 + 4 / (k+1)
=4/(k+1) - 2
o(∩_∩)o

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