Question

(p+9q+2)² using suitable identities​

Answer 1

Answer:

hope this helps you....

Answer 2

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$\longmapsto \sf(p + 9q + 2 {)}^{2}$

$\longmapsto \sf {p}^{2} + {(9q)}^{2} + {2}^{2} + 2 \times p \times 9q + 2 \times 9q \times 2 + 2 \times 2 \times p$

$\longmapsto \sf {p}^{2} + 81 {q}^{2} + 4 + 18pq + 36q + 4p$

Identity Used :-

( a + b + c )² = a² + b² + c² + 2ab + 2bc + 2ac