See Sin Yee's answer to SlyFox's Secondary 1 Maths Singapore question

Sin Yee's answer to SlyFox's Secondary 1 Maths Singapore question.

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Date Posted: 4 years ago

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SlyFox

4 years ago

I just have some doubts to clear. When you did 4m(2n-1)-(2n+1), what made you put the brackets like 4m(2n-1)-(2n+1) instead of doing 4m(2n-1-2n+1)? Thanks.