8.)
The point P on x-axis equidistant from the points A(-1,0) and B(5, 0) is
a) (2,0)
(b) (0, 2)
(c) (3,0) (d) (2, 2)
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Answer:
Given points A(-1,0) and B(5,0)
Let the point be P(x,0) [we know that point on x-axis is (x,0)]
So, AP=PB and AP2=PB2
⇒(x+1)^2+(0-0)2^=(x-5)^2+(0-0)^2
x^2+1+2x + 0=x^2+25-10x + 0
10x+2x = 25-1
12x=24
24/12=x
⇒x=2
Hence, point on x-axis which is equidistant from the points A(-1,0) and B(5,0) is (2,0)
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