The degree of the polynomial x plus y squared minus 7 x y minus 6 w to the k th power z squared is 10 What is the value of k ?

The term with the greatest degree is −6w^kz^2, whose degree is k + 2 because the exponents of its variables add. The polynomial has degree 10, so k + 2 = 10 and k = 8. Therefore, the correct choice is 8.

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