give the solution x4 - x2y2- 72y4
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x⁴ - x²y² - 72y⁴
=> x⁴ - 9x²y² + 8x²y² - 72y⁴
=> x² ( x² - 9y² ) + 8y² ( x² - 9y² )
=> ( x² - 9y² ) ( x² + 8y² )
Hope it helps....✌✌
x⁴ - x²y² - 72y⁴
=> x⁴ - 9x²y² + 8x²y² - 72y⁴
=> x² ( x² - 9y² ) + 8y² ( x² - 9y² )
=> ( x² - 9y² ) ( x² + 8y² )
Hope it helps....✌✌
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