Question

expand the following ​

Answer 1

Answer:

$\sf {pq}^{ {2}^{2} } + 2( {pq}^{2} \times 5) + {5}^{2}$

$\sf \to {pq}^{4} + 2(5 {pq)}^{2} + 25$

$\sf \to {pq}^{4} + 10 {pq}^{2} + 25$

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Note:-

$\sf{(x + y)}^{2} = {x}^{2} + 2xy + {y}^{2}$