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X plus 2 to the second power plus y minus 4 to the second power equals 36. What is x?
Wiki User
∙ 14y ago
(x+2)2 + (y-4)2 = 36
This is the graph of a circle, with a radius of 6, centered at the point (-2, 4).
(x+2) = sqrt [ 36 - (y-4)2 ]
X = -2 + sqrt [ 36 - (y-4)2]
If you pick a million numbers for ' Y ', this equation is not solvable whenever the absolute value of (Y-4) is more than 6. But whenever the absolute value of (Y-4) is 6 or less, you get two solutions for ' X '. Plot them on a graph, and they all fall on the circle described above.
Wiki User
∙ 14y ago
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