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Algebra 18 Online
OpenStudy (anonymous):

find the sum or difference ( check my answers) 1) 2x^4 - 8x^4 a. -6x^8 b. -6x^4 c. -16x^4 my choice d. -16x^8 2. 6y^5 - 9y^5 a.3y^10 b. 15y^5 c. -54y^5 my choice d. -3y^5

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