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E-Math Note : Usage of bracket in Expansion


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Another TIP for students taking Elementary Mathematics (E-Math)

Qn: Expand and Simplify the following:

Method 1 : Expansion using one of the Algebraic rules

Did you see what is not right?

Method 2: Recognizing

so

Method 1:

Bracket is missing! the negative sign belongs to the expansion of not just

Correct Ans:

Ai Ling Ong

Hi, I'm Ai Ling Ong. I enjoy coaching students who have challenges with understanding and scoring in 'O' Level A-Maths and E-Maths. I develop Math strategies, sometimes ridiculous ideas to help students in understanding abstract concepts the fast and memorable way. I write this blog to share with you the stuff I teach in my class, the common mistakes my students made, the 'way' to think, analyze... If you have found this blog post useful, please share it with your friends. I will really appreciate it! :)

Filed Under: E-Maths, Learning Tools Tagged With: common mistake, correct usage of bracket, expansion, negative sign

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