CAT QA MCQ problem 2: The roots of t²−13t+36=0 have what sum?
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By Vieta, root sum is the coefficient 13.
Practice India questions with answers and explanations.
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By Vieta, root sum is the coefficient 13.
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(5+12)/2=8.5.
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Increase/base ×100 = 25%.
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The units digit follows from 5³.
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8²+21²=505.
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Area=9×5=45.
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By Vieta, root sum is the coefficient 18.
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Increase/base ×100 = 25%.
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14²+20²=596.
Area=½×13×8=52.0.
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Area=11×18=198.
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By Vieta, root sum is the coefficient 33.