Perfect-square root and equation from roots

Perfect-square root and equation from roots

Secondary 2

3 marks

TGM Original Questions

Core stretch

The roots of a quadratic are \(-4\) and \(\dfrac53\). Write the equation as \(12x^2+bx+c=0\).[3]

Solution:

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Answer:\(12x^2+28x-80=0\), so \(b=28,c=-80\).

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