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Simplifying 4x2 + -36 = -81 Reorder the terms: -36 + 4x2 = -81 Solving -36 + 4x2 = -81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '36' to each side of the equation. -36 + 36 + 4x2 = -81 + 36 Combine like terms: -36 + 36 = 0 0 + 4x2 = -81 + 36 4x2 = -81 + 36 Combine like terms: -81 + 36 = -45 4x2 = -45 Divide each side by '4'. x2 = -11.25 Simplifying x2 = -11.25 Reorder the terms: 11.25 + x2 = -11.25 + 11.25 Combine like terms: -11.25 + 11.25 = 0.00 11.25 + x2 = 0.00 The solution to this equation could not be determined.
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