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Question

If α and β are the zero of x2 + 5x + 8, then the value of (α + β) is

(a) 5
(b) −5
(c) 8
(d) −8

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Solution

(b) -5Given: α and β are the zeroes of x2+5x+8.If α+β is the sum of the roots and αβ is the product, then the required polynimial will be x2-(α+β)+αβ. α+β=5

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