Answer:
Yes you are correct. It is x^4/21 or C.
Explanation:
x^-2/3 • x^6/7
x^ -2/3 + 6/7
x^ 7(-2) + 3•6 / 3•7
x^ -7 •2 + 18 / 3•7
x^ -14 + 18 / 3•7
x^ 4 / 3•7
x^ 4/21
here
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