X has to be inside the radical.
It would be

Simplify the radical by breaking the radicand up into a product of known factors.
Start with

Add 2x to both sides:

Subtract 21 from both sides:

Divide both sides by 5. Since it is positive, we don't have to change the inequality sign:

So, the answer is 
Answer: 48560
Step-by-step explanation:
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Answer:t the farthest city south is bellville and the volcano name is sue
Step-by-step explanation: