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secondary 4 | A Maths
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Zwen
Zwen

secondary 4 chevron_right A Maths chevron_right Singapore

Hi, how to solve this function?

Date Posted: 2 years ago
Views: 313
J
J
2 years ago
Property : (a - b)² = a² - 2ab + b²

(5 - 2√(t+3) )²

= 5² - 2(5)(2√(t+3) ) + (2√(t+3) )²

= 25 - 20√(t+3) + 4(t+3)

= 25 - 20√(t+3) + 4t + 12

= 37 - 20√(t+3) + 4t

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Jethro Lee
Jethro Lee's answer
7 answers (Tutor Details)
1st
is (a-b)(a-b) not (a+b)(a-b)
Zwen
Zwen
2 years ago
Ohh ok thanks