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What is (9x^4-x^2y^2-5y^4)-(3x^4+2x^2y^2-7y^4)
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What is (9x^4-x^2y^2-5y^4)-(3x^4+2x^2y^2-7y^4)

User Mahmoud Hboubati
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(9x⁴ - x²y² - 5y⁴) - (3x⁴ + 2x²y² - 7y⁴)
9x⁴ - x²y² - 5y⁴ - 3x⁴ - 2x²y² + 7y⁴
6x⁴ - 3x²y² + 2y⁴
User Puggie
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