Question

find the product using identities (1/3x^2 - 9) (1/3x^2 - 9)​

Answer 1

Answer:

(x²/3-9)(x²-9)=(x²/3-9)²

We know,(a-b)²=a²+b²-2ab

Here,we can consider x²/3 as a and 9 as b

Hence,(x²/3-9)²=(x²/3)²+(9)²-2(x²/3)(9)

=x⁴/3²+81-2x²/27=x⁴/9+81-2x²/27

Final Answer:(3x⁴+243-2x²)/27

Answer 2

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