Answer:
B
Explanation:
step 1 - rationalize the denominator to get:
÷ = ( ·x^5/2·x^3/2) ÷ 7x³
= (·x^4) ÷ 7x³
= 7·x^4 ÷ 7x³
= x
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÷ 
= (
·x^5/2·x^3/2) ÷ 7x³
·x^4) ÷ 7x³·x^4 ÷ 7x³x