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Simplifying -11x2 + 12x + -7 = 0 Reorder the terms: -7 + 12x + -11x2 = 0 Solving -7 + 12x + -11x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -11 the coefficient of the squared term: Divide each side by '-11'. 0.6363636364 + -1.090909091x + x2 = 0 Move the constant term to the right: Add '-0.6363636364' to each side of the equation. 0.6363636364 + -1.090909091x + -0.6363636364 + x2 = 0 + -0.6363636364 Reorder the terms: 0.6363636364 + -0.6363636364 + -1.090909091x + x2 = 0 + -0.6363636364 Combine like terms: 0.6363636364 + -0.6363636364 = 0.0000000000 0.0000000000 + -1.090909091x + x2 = 0 + -0.6363636364 -1.090909091x + x2 = 0 + -0.6363636364 Combine like terms: 0 + -0.6363636364 = -0.6363636364 -1.090909091x + x2 = -0.6363636364 The x term is -1.090909091x. Take half its coefficient (-0.5454545455). Square it (0.2975206612) and add it to both sides. Add '0.2975206612' to each side of the equation. -1.090909091x + 0.2975206612 + x2 = -0.6363636364 + 0.2975206612 Reorder the terms: 0.2975206612 + -1.090909091x + x2 = -0.6363636364 + 0.2975206612 Combine like terms: -0.6363636364 + 0.2975206612 = -0.3388429752 0.2975206612 + -1.090909091x + x2 = -0.3388429752 Factor a perfect square on the left side: (x + -0.5454545455)(x + -0.5454545455) = -0.3388429752 Can't calculate square root of the right side. The solution to this equation could not be determined.
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