5x+3
=5/2(2x+6/5)
=5/2(2x-15/5+9/5)
=5/2(2x-3+9/5)
=5/2(2x-3)+5/2*9/5
=5/2(2x-3)+9/2
那個(gè)算錯(cuò)了
5x+3是如何轉(zhuǎn)化為5/2（2x-3）+21/2的?
5x+3是如何轉(zhuǎn)化為5/2（2x-3）+21/2的?
數(shù)學(xué)人氣：970 ℃時(shí)間：2020-09-28 11:39:35
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