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Simplifying 0 = x2 + y2 + -18 Reorder the terms: 0 = -18 + x2 + y2 Solving 0 = -18 + x2 + y2 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x2' to each side of the equation. 0 + -1x2 = -18 + x2 + -1x2 + y2 Remove the zero: -1x2 = -18 + x2 + -1x2 + y2 Combine like terms: x2 + -1x2 = 0 -1x2 = -18 + 0 + y2 -1x2 = -18 + y2 Divide each side by '-1'. x2 = 18 + -1y2 Simplifying x2 = 18 + -1y2 Reorder the terms: -18 + x2 + y2 = 18 + -1y2 + -18 + y2 Reorder the terms: -18 + x2 + y2 = 18 + -18 + -1y2 + y2 Combine like terms: 18 + -18 = 0 -18 + x2 + y2 = 0 + -1y2 + y2 -18 + x2 + y2 = -1y2 + y2 Combine like terms: -1y2 + y2 = 0 -18 + x2 + y2 = 0 The solution to this equation could not be determined.
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