Evaluate:
(ii) $5 a b - 2 a b - 8 a b + 6 a b$

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Solution

Simplifying the given expression , we get ,

$5 a b - 2 a b - 8 a b + 6 a b = a b (5 - 2 - 8 + 6)$ \)

$= a b (11 - 10)$

$= a b$

Hence, $5 a b - 2 a b - 8 a b + 6 a b = a b$ .

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