Question

please solve this question​

Answer 1

Answer:

9m*२+15mn+15mn+25n*२

3m(3m+5n) +5n(3m+5n)

(3m+5n) (3m+5n)

Answer 2

$\sf \: 9 {m}^{2} + 30mn + 25 {n}^{2} \\ \sf \implies \: (3 {m})^{2} + 30mn + (5 {n})^{2} \\ \sf \implies \: ((3 {m})^{2} + (5 {n})^{2} ) + 30mn \\ \gray{ \sf \: {(a + b})^{2} = {a}^{2} + {b}^{2} + 2ab } \\ \red{\sf \implies (3m + 5n)....(ans)}$