# Factorize:49a2 + 84ab + 36b2

Given,

49a2 + 84ab + 36b2

By using the formula (a + b)2 = a2 + 2ab + b2

We get,

= (7a)2 + 2 × 7a × 6b + (6b)2

= (7a + 6b)2

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