Question

(x – 3y) (x + 3y) (x2 + 9y2)2

Answer 1

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Answer 2

Answer:

(x-3y) (x+3y) (x²+9y²)²

= { (x-3y) (x+3y) } [ (x²+9y²)² ]

= { (x)² - (3y)²} [ (x²)²+(9y²)² ]

= { (x²) - (3y²) } [x^4 + 81y^4 + 2 *x² *9y² ]

= { x²- 3y² } [x^4 + 81y^4 + 18x²y²]

= x^6 - 81x²y^4 + 18x^4*y² - 3x^4*y² -243y^6 - 54x²y^4

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