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Difference of the polynomials

10/12/2020

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What's the difference between this polynomials (9x² + 8x) - (2x² + 3x) ?

Remove the parentheses and combine the like terms. Like terms have same variable / same exponent.

(9x² + 8x) - (2x² + 3x)
= 9x² + 8x - 2x² - 3x {removed parentheses, distributing negative sign through second set of parentheses}
= 7x² + 5x {combined like terms}

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