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Question

Mathematics Question on Coordinate Geometry

Let (α, β) be the centroid of the triangle formed by the lines 15x - y = 82, 6x - 5y = - 4 and 9x + 4y = 17. Then α + 2β and 2α − β are the roots of the equation

A

x2 - 14x + 48 = 0

B

x2 - 10x + 25 = 0

C

x2 - 7x + 12 = 0

D

x2 - 13x + 42 = 0

Answer

x2 - 13x + 42 = 0

Explanation

Solution

The correct answer is (D) : x2 - 13x + 42 = 0