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\(\frac{{{{\left( {598 + 479} \right)}^2} - {{\left( {598 - 479} \right)}^2}}}{{598 \times 479}} = \;?\)1. 42. 103. 1324. 85. None of the above/More than one of the above |
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Answer» Correct Answer - Option 1 : 4 Formulae Used: (a + b)2 = a2 + 2ab + b2 (a - b)2 = a2 - 2ab + b2 Calculation: Let us consider a = 598, and b = 479 So, the numerator = a2 + 2ab + b2 - (a2 - 2ab + b2) = 4ab and the denominator = a × b = ab ∴ ? = 4ab/ab = 4 |
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