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Simplifying (x + -9)(x + 9) + -1y2 = 0 Reorder the terms: (-9 + x)(x + 9) + -1y2 = 0 Reorder the terms: (-9 + x)(9 + x) + -1y2 = 0 Multiply (-9 + x) * (9 + x) (-9(9 + x) + x(9 + x)) + -1y2 = 0 ((9 * -9 + x * -9) + x(9 + x)) + -1y2 = 0 ((-81 + -9x) + x(9 + x)) + -1y2 = 0 (-81 + -9x + (9 * x + x * x)) + -1y2 = 0 (-81 + -9x + (9x + x2)) + -1y2 = 0 Combine like terms: -9x + 9x = 0 (-81 + 0 + x2) + -1y2 = 0 (-81 + x2) + -1y2 = 0 Solving -81 + x2 + -1y2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '81' to each side of the equation. -81 + x2 + 81 + -1y2 = 0 + 81 Reorder the terms: -81 + 81 + x2 + -1y2 = 0 + 81 Combine like terms: -81 + 81 = 0 0 + x2 + -1y2 = 0 + 81 x2 + -1y2 = 0 + 81 Combine like terms: 0 + 81 = 81 x2 + -1y2 = 81 Add 'y2' to each side of the equation. x2 + -1y2 + y2 = 81 + y2 Combine like terms: -1y2 + y2 = 0 x2 + 0 = 81 + y2 x2 = 81 + y2 Simplifying x2 = 81 + y2 Reorder the terms: -81 + x2 + -1y2 = 81 + y2 + -81 + -1y2 Reorder the terms: -81 + x2 + -1y2 = 81 + -81 + y2 + -1y2 Combine like terms: 81 + -81 = 0 -81 + x2 + -1y2 = 0 + y2 + -1y2 -81 + x2 + -1y2 = y2 + -1y2 Combine like terms: y2 + -1y2 = 0 -81 + x2 + -1y2 = 0 The solution to this equation could not be determined.
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