Question

3C + 2 b whole square

Answer 1

${(3c + 2b)}^{2}$
$9 {c }^{2} + 4 {b}^{2} + 12bc$

Answer 2

(3C + 2b) = 3C² + 2B²+2(3C+2B)

= 9c² + 4b² + 12bc