Maths question!!

[匿名]

2007-09-26 11:10 pm

Why 5(m-2)+2=5m-10+2=(5m -8) ???

回答 (2)

用戶180973

2007-09-27 12:16 am

✔ 最佳答案

Because 5(m-2)+2=5xm+(-2x5)+2

參考: me

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用戶76453

2007-09-26 11:17 pm

5(m-2)+2
=5xm-5x2+2
=5m-10+2
=5m-8

係數學計數題中最基本ge題~

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