exam Maths Puzzle Numerical Ability

I an having trouble with this problem:

square root of X= square root of (x-8) +2

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exam Other Question

If you select 2 cards from a deck, what is the probability of getting 2 matching cards (2kings, 2fives, and so on)? Please help me. I am having problem with this question.

Anne is pulling on a 60-foot rope attached to the top of a 48-foot tree while Walter is cutting the tree at its base. How far from the base of the tree is Anne standing?

Thank you