Question

You have to use the identity
Please tell its answer not the identity please
​

Answer 1

$a) \: \: {(3a + 2b)}^{2} \\ {(a + b)}^{2} = {a}^{2} + 2ab - {b}^{2} \\ a = 3a \: \: \: \: b = 2b \\ {(3a + 2b)}^{2} = {(3a)}^{2} + 2(3a)(2b) - {(2b)}^{2} \\ = 9 {a}^{2} + 12ab - 4 {b}^{2}$

$b) \: \: \: {(4a - 5b)}^{2} \\ {(a - b)}^{2} = {a}^{2} - 2ab - {b}^{2} \\ a = 4a \: \: \: b = 5b \\ {(4a - 5b)}^{2} = {(4a)}^{2} - 2(4a)(5b) - {(5b)}^{2} \\ = 16 {a}^{2} - 40ab - 25 {b}^{2}$

These are your answer. If it helps you, so kindly mark it as Brainliest.

Answer 2

Step-by-step explanation:

sorry nahi pata

................