Herman's answer to idununderstandasinglething's Secondary 4 A Maths Singapore question.
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Manipulate for expression to get a+b and ab
Use answers in part i to solve part ii
Remember expansion of (a+b) ^3 or derive it on the spot with binomial theorem
Remember how to obtain sum and product of roots from the quadratic equation
Use answers in part i to solve part ii
Remember expansion of (a+b) ^3 or derive it on the spot with binomial theorem
Remember how to obtain sum and product of roots from the quadratic equation
Date Posted:
4 years ago
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