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Simplifying X2 + 9y2 + -18y = -1 Reorder the terms: X2 + -18y + 9y2 = -1 Solving X2 + -18y + 9y2 = -1 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '18y' to each side of the equation. X2 + -18y + 18y + 9y2 = -1 + 18y Combine like terms: -18y + 18y = 0 X2 + 0 + 9y2 = -1 + 18y X2 + 9y2 = -1 + 18y Add '-9y2' to each side of the equation. X2 + 9y2 + -9y2 = -1 + 18y + -9y2 Combine like terms: 9y2 + -9y2 = 0 X2 + 0 = -1 + 18y + -9y2 X2 = -1 + 18y + -9y2 Simplifying X2 = -1 + 18y + -9y2 Reorder the terms: 1 + X2 + -18y + 9y2 = -1 + 18y + -9y2 + 1 + -18y + 9y2 Reorder the terms: 1 + X2 + -18y + 9y2 = -1 + 1 + 18y + -18y + -9y2 + 9y2 Combine like terms: -1 + 1 = 0 1 + X2 + -18y + 9y2 = 0 + 18y + -18y + -9y2 + 9y2 1 + X2 + -18y + 9y2 = 18y + -18y + -9y2 + 9y2 Combine like terms: 18y + -18y = 0 1 + X2 + -18y + 9y2 = 0 + -9y2 + 9y2 1 + X2 + -18y + 9y2 = -9y2 + 9y2 Combine like terms: -9y2 + 9y2 = 0 1 + X2 + -18y + 9y2 = 0 The solution to this equation could not be determined.
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