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secondary 3 | E Maths
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holowinwin
Holowinwin

secondary 3 chevron_right E Maths

Can someone help explain the working for 2g?Thank you:)

Date Posted: 7 years ago
Views: 419

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Soh Hao Ming
Soh Hao Ming's answer
35 answers (A Helpful Person)
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Hope you'll understand. (2x-1) sq is by using a^2-2ab+b^2
holowinwin
Holowinwin
7 years ago
yes I do!Thank u!
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Arnold K H Tan
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2178 answers (A Helpful Person)
U can use substitution to simply algebraic expresssions... at times. When your algebra is strong, you can work it out without substitution, as Jiayang did.
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LEE YU JIE
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