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Factorisation by Common Factors

Factorise: ...

Question

Factorise: $7 y^{2} + 35 z^{2}$

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Solution

We need to factorise $7 y^{2} + 35 z^{2}$
It can be written as $7 y^{2} + 35 z^{2} = 7 (y^{2} + 5 z^{2})$
Thus factors are $7, (y^{2} + 5 z^{2})$ .

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