the distance between two points is 5 one of them is 3 2 and the ordinate of the second is -1 then its X co-ordinate are
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mharshal5554:
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distnce btw two points = √(x2-x1)^2 -(y2-y1)^2
5 = √(x2-3)^2 + (-1-2)^2
5= √(x2-3)^2 + (-3)^2
5= √(x2-3)^2+ 9
on squaring both sides
25 = (x2-3)^2 + 9
(x2-3)^2 = 25-9
(x2-3)^2= 16
x2-3 =√16
x2 -3 = 4
x2 = 4+3 =7
so x coordinate is 7
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