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Addition and Subtraction of Algebraic Expression

Factorise 2...

Question

Factorise $2 x^{2} - 9 x + 9$

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Solution

$\begin{matrix} 2 x^{2} - 9 x + 9 = 2 x^{2} - 6 x - 3 x + 9 = 2 x (x - 3) - 3 (x - 3) = (2 x - 3) (x - 3) \end{matrix}$

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