CAT QA TITA numerical 116: If the roots of z²−8z+15=0 are r and s, enter r+s.
Correct Answer: 8
Explanation:
Vieta gives r+s=8.
Practice India questions with answers and explanations.
Vieta gives r+s=8.
Vieta gives r+s=26.
141
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4²+16²=272.
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Area=5×19=95.
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By Vieta, root sum is the coefficient 9.
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(7+6)/2=6.5.
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Increase/base ×100 = 25%.
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The units digit follows from 1³.
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10²+15²=325.
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Area=11×18=198.
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By Vieta, root sum is the coefficient 33.