Resolve in to factors: $5 - 10 m - 20 n .$

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Solution

Given expression is $5 - 10 m - 20 n$ .

We can rewrite it as:
$5 - 5 \times 2 \times m - 5 \times 4 \times n$

$= 5 - 5 (2 m) - 5 (4 m)$

Taking $5$ common from all the terms, we get:
$5 (1 - 2 m - 4 n)$

Hence, $5 - 10 m - 20 n = 5 (1 - 2 m - 4 n)$ .

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