Factorising Polynomials to Reduce a Rational Expression

Factorising Polynomials to Reduce a Rational Expression

Secondary 2

Simplify \(\frac{2{{a}^{2}}-12a+18}{{{a}^{2}}-6a-ab+3b+9}\).

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Answer:\(\frac{2(a-3)}{a-3-b}\), where \(a\ne3\) and \(a\ne b+3\)

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