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secondary 3 | E Maths
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xuanni
Xuanni

secondary 3 chevron_right E Maths

Help for question 10

Date Posted: 7 years ago
Views: 559

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Bryant Lam Hong Sheng
Bryant Lam Hong Sheng's answer
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Edward Sim
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You have to understand 3 points in order to answer this question.

1.The root formula(the one with +- signs)
2.The substitution of the 2+-rt3 into the formula(where (-b) = 2...)
3. The denominator must remain 1, or your numerator must change. ie. if 2a =2, then the '-b' must be 4 instead of 2.