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Algebraic Identities

Factorise: ...

Question

Factorise: $5 x^{2} - 25 x y$

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Solution

We need to factorise $5 x^{2} - 25 x y$
We can write it as $5 x^{2} - 25 x y = 5 x (x - 5 y)$
Thus factors are $5, x, (x - 5 y)$ .

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