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Simplifying -81 = x * x Multiply x * x -81 = x2 Solving -81 = x2 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. -81 + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -81 + -1x2 = 0 Add '81' to each side of the equation. -81 + 81 + -1x2 = 0 + 81 Combine like terms: -81 + 81 = 0 0 + -1x2 = 0 + 81 -1x2 = 0 + 81 Combine like terms: 0 + 81 = 81 -1x2 = 81 Divide each side by '-1'. x2 = -81 Simplifying x2 = -81 Reorder the terms: 81 + x2 = -81 + 81 Combine like terms: -81 + 81 = 0 81 + x2 = 0 The solution to this equation could not be determined.
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