Question

factorize
81( x + y)² - 16( x - y )²​

Answer 1

Answer:

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81( x+y )² - 16( x-y )²

= 81( x²+y²) - 16( x²-y²)

= 81x²+81y²- 16x²+16y²

= 81x²-16x²+81y²+16y²

= 65x²+97y²

Answer 2

Answer:

Answer is here!

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