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Simplifying -8x2 + 16x + -11 = 0 Reorder the terms: -11 + 16x + -8x2 = 0 Solving -11 + 16x + -8x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -8 the coefficient of the squared term: Divide each side by '-8'. 1.375 + -2x + x2 = 0 Move the constant term to the right: Add '-1.375' to each side of the equation. 1.375 + -2x + -1.375 + x2 = 0 + -1.375 Reorder the terms: 1.375 + -1.375 + -2x + x2 = 0 + -1.375 Combine like terms: 1.375 + -1.375 = 0.000 0.000 + -2x + x2 = 0 + -1.375 -2x + x2 = 0 + -1.375 Combine like terms: 0 + -1.375 = -1.375 -2x + x2 = -1.375 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = -1.375 + 1 Reorder the terms: 1 + -2x + x2 = -1.375 + 1 Combine like terms: -1.375 + 1 = -0.375 1 + -2x + x2 = -0.375 Factor a perfect square on the left side: (x + -1)(x + -1) = -0.375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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