lim x>2 √x - √2 ÷ x^2 - 4
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x^2-4=(×+2)(x-2)
now x-2=(rootx+root2)(rootx-root2)
now (rootx-root2) will be cancelled in both num and den ..... and then put x=2. get the result
now x-2=(rootx+root2)(rootx-root2)
now (rootx-root2) will be cancelled in both num and den ..... and then put x=2. get the result
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