A few days ago
Find all points on the x-axis that are 4 units from P (-2, 3)?
Enter your answer as ordered pair(s). If there are multiple answers, separate them with a comma.
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A few days ago
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Let (x, 0) be one of the points.
Then:
(x + 2)^2 + (-3)^2 = 4^2
x^2 + 4x – 3 = 0
x = (-4 +/- sqrt(28)) / 2
x = – 2 +/- sqrt(7).
(-2 – sqrt(7),0) , (-2 + sqrt(7),0).
0
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