Answer:
x^5/6 + 2x^7/3
Explanation:
The first choice: x^5/6 + 2x^7/3
= x^1/3 * x^1/2 + x^1/3 * 2x^2
= x^(1/2+1/3) + 2x(1/3 + 2)
= x^5/6 + 2x^7/3
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