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Using the fact that (x+y)2=x+y+2xy(\sqrt{x}+\sqrt{y})^2=x+y+2\sqrt{xy}(x+y)2=x+y+2xy, find the square root of 5+245+\sqrt{24}5+24. This number can be expressed in the form a+b\sqrt{a}+\sqrt{b}a+b, where a≤ba\leq{b}a≤b.
Find the value of b−ab-ab−a.
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