subtract 5x⁴ +4x² -3x +2 from 13x⁴ -7x² +6x -7
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Step-by-step explanation:
13x⁴ - 7x² + 6x - 7 - (5x⁴ + 4x² - 3x + 2)
= 13x⁴ - 7x² + 6x - 7 - 5x⁴ - 4x² + 3x - 2
= 13x⁴ - 5x⁴ - 7x² - 4x² + 6x + 3x - 7 - 2
= 8x⁴ - 11x² + 9x - 9
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