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Factorisation by Common Factors

Factorise: ...

Question

Factorise: $7 a^{2} + 14 a$

A

7 a (a + 2)

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B

14 a (a + 1)

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C

7 a (a - 2)

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D

14 (a + 2)

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Solution

The correct option is A $7 a (a + 2)$
Take $7 a$ common from the given expression.
$7 a^{2} + 14 a$ $= 7 a (a + 2)$

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