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Did I do this correct? 7. (x^5 - x^4 + 3x^3 + x^2 ) - (9x^5 - 4x^4 + 3x^3 - 5x) -4x^5 + 5x^4 - x^3 - x^2 - 5x
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YES
Could you view couple more to see if I did them correct also?
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