Question

If a²+b² =9 ab=4. Find the value of 3(a+b)²(a-b)²

Answer 1

this is the answer
hope it helps you

Answer 2

HEYA !

Given that,

a² + b² = 9 and ab = 4

Now,

3 (a + b)² (a - b)²

= 3 (a² + b² + 2ab) (a² + b² - 2ab)

= 3 [ 9 + 2(4) ] [ 9 - 2(4) ]

= 3 (9 + 8) (9 - 8)

= 3 × 17 × 1

= 51

__________________________

Identity Used :

→ (a + b)² = a² + b² + 2ab

→ (a - b)² = a² + b² - 2ab


$\boxed{ \: \mathbf{HOPE \: \: \: IT \: \: HELPS} \: }$