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Simplifying x2 + 3a + 81 = 0 Reorder the terms: 81 + 3a + x2 = 0 Solving 81 + 3a + x2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-81' to each side of the equation. 81 + 3a + -81 + x2 = 0 + -81 Reorder the terms: 81 + -81 + 3a + x2 = 0 + -81 Combine like terms: 81 + -81 = 0 0 + 3a + x2 = 0 + -81 3a + x2 = 0 + -81 Combine like terms: 0 + -81 = -81 3a + x2 = -81 Add '-1x2' to each side of the equation. 3a + x2 + -1x2 = -81 + -1x2 Combine like terms: x2 + -1x2 = 0 3a + 0 = -81 + -1x2 3a = -81 + -1x2 Divide each side by '3'. a = -27 + -0.3333333333x2 Simplifying a = -27 + -0.3333333333x2
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