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OpenStudy (tatianagarcia90300):
help which of the following shows that polynomials are closed under addition when two polynomials 4x^2 - 8x - 7 and -5x + 16 are added A.4x^2 - 13x + 9 may or may not be a polynomial B.4x^2 + 13x - 23 may or may not be a polynomial C.4x^2 - 13x + 9 will be a polynomial D.4x^2 + 13x - 23 will be a polynomial answer pleaase
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OpenStudy (tatianagarcia90300):
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