?Find the sum of the vectors ? and .
?

A. ?
B. ?
C. ?
D. ?
E. ?


Answer: C

Mathematics

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Factor completely. If the polynomial is prime, state so.9x2 + 42x + 49

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Determine whether the following matrix is in row-echelon form. If it is, determine if it is also in reduced row-echelon form. ? ? ?

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