√a+b-2√ab is ______ where √a >√b
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Step-by-step explanation:
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sqrt( a + b - 2sqrt(a × b))
= sqrt( [sqrt(a) - sqrt(b)]^2 )
= sqrt(a) - sqrt(b)
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√a + b - 2 √ab = ( √a - √b ) 2
【 ( a - b ) 2 = a2 + b2 - 2ab 】
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