pand qare zeroes of x² + 7x + 10, then find p²+ q² – InterviewSolution

1.

pand qare zeroes of x² + 7x + 10, then find p²+ q²

Answer»

x² + 7x + 10

p + q = (-7)

pq = 10

(p+q)² = p² + q² + 2pq(-7)² = p² + q² + 2×(10)49 - 20 = p² + q² p² + q² = 29

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