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Mathematics 22 Online
OpenStudy (anonymous):

(6x3 + 7x + 12) - (3x2 + 8x + 8)

OpenStudy (anonymous):

You're just combining the like terms. 6x^3 - 3x^2 - x + 4

OpenStudy (anonymous):

You distribute the negative sign across the whole second term and then combine the like bases.

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