Question

The factorisation of 7a2+14a is
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Answer 1

Answer:

$7 {a}^{2} + 14a \\ = 7a(a + 2)$

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Answer 2

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$\red\leadsto$Explained below

$7 {a}^{2} + 14a = 0 \\ 7 {a}^{2} = 7 \times a \times a \\ = (7 \times a)a \\ \\ \\ 14a = 2 \times 7 \times a \\ = (7 \times a)2 \\ \\ 7 {a}^{2} + 14a = (7 \times a)(a + 2) \\ 7a(a + 2)$