Quadratic Functions, Equations and Inequalities

Quadratic Functions, Equations and Inequalities

Secondary 1

Solve \(2x^2=7x\) by factorisation.
Explain why dividing both sides by \(x\) immediately could lose an answer.

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Answer:\(x=0\) or \(\frac72\); division by \(x\) would exclude \(x=0\).

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