Exact roots and rationalisation
Exact roots and rationalisation
5 marks
TGM Original
Solve 3x2+4x-2=0, giving exact roots. Hence simplify the reciprocal of the positive root.
Solution:
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Answer:\(x=\dfrac{-2\pm\sqrt{10}}3\); reciprocal \(\dfrac{\sqrt{10}+2}2\).
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