Question

Use identity to get the product of (2a² + 9)(2a² + 9)​

Answer 1

$\color{red}{QUESTION}$

Use identity to get the product of (2a² + 9)(2a² + 9)

$\color{blue}{ANSWER}$

As (2a² + 9)(2a² + 9) is making the identity of (a+b)² = a² + 2ab + b²

Where, a = 2a² & b = 9

So by that, we get:

=> (2a² + 9)(2a² + 9) => (2a² + 9)²

=> (2a²)² + 2(2a²)(9) + (9)²

=> 4a⁴ + 36a² + 81

Hence, 4a⁴ + 36a² + 81 is your answer

Answer 2

Step-by-step explanation:

(2a²+9)(2a²+9) = (2a²+9)²

= (2a²)²+2(2a²)(9)+(9)²

= 4a⁴+12a²+81

WE HAVE DONE THIS BY THE IDENTITY ** (A+B)² = A²+2AB+B² **

HERE , A = 2a² AND B = 9

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