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Simplifying 11x2 + 5x = -9 Reorder the terms: 5x + 11x2 = -9 Solving 5x + 11x2 = -9 Solving for variable 'x'. Reorder the terms: 9 + 5x + 11x2 = -9 + 9 Combine like terms: -9 + 9 = 0 9 + 5x + 11x2 = 0 Begin completing the square. Divide all terms by 11 the coefficient of the squared term: Divide each side by '11'. 0.8181818182 + 0.4545454545x + x2 = 0 Move the constant term to the right: Add '-0.8181818182' to each side of the equation. 0.8181818182 + 0.4545454545x + -0.8181818182 + x2 = 0 + -0.8181818182 Reorder the terms: 0.8181818182 + -0.8181818182 + 0.4545454545x + x2 = 0 + -0.8181818182 Combine like terms: 0.8181818182 + -0.8181818182 = 0.0000000000 0.0000000000 + 0.4545454545x + x2 = 0 + -0.8181818182 0.4545454545x + x2 = 0 + -0.8181818182 Combine like terms: 0 + -0.8181818182 = -0.8181818182 0.4545454545x + x2 = -0.8181818182 The x term is 0.4545454545x. Take half its coefficient (0.2272727273). Square it (0.05165289257) and add it to both sides. Add '0.05165289257' to each side of the equation. 0.4545454545x + 0.05165289257 + x2 = -0.8181818182 + 0.05165289257 Reorder the terms: 0.05165289257 + 0.4545454545x + x2 = -0.8181818182 + 0.05165289257 Combine like terms: -0.8181818182 + 0.05165289257 = -0.76652892563 0.05165289257 + 0.4545454545x + x2 = -0.76652892563 Factor a perfect square on the left side: (x + 0.2272727273)(x + 0.2272727273) = -0.76652892563 Can't calculate square root of the right side. The solution to this equation could not be determined.
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