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Question

Find the point on X-axis which is equidistant from the points (2,6) and (-4,0)

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Solution

Consider a point A(x, 0) on the X-axis,
which is equidistant from B(2, 6) and C(– 4, 0).
From these points, x1 = 2, y1 = 6, x2 = – 4, y2 = 0.

A is equidistant from B and C AB = ACAB2 = AC2x-22+0-62=x--42+0-02x-22+-62=x+42+02x2+4-4x+36=x2+16+8x+04-4x+36=16+8x+0-4x+40=8x+16-4x-8x=16-40-12x=-24x = 2Therefore, the required point is 2, 0.

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