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Simplifying 16x2 + -21x + 11 = 0 Reorder the terms: 11 + -21x + 16x2 = 0 Solving 11 + -21x + 16x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 16 the coefficient of the squared term: Divide each side by '16'. 0.6875 + -1.3125x + x2 = 0 Move the constant term to the right: Add '-0.6875' to each side of the equation. 0.6875 + -1.3125x + -0.6875 + x2 = 0 + -0.6875 Reorder the terms: 0.6875 + -0.6875 + -1.3125x + x2 = 0 + -0.6875 Combine like terms: 0.6875 + -0.6875 = 0.0000 0.0000 + -1.3125x + x2 = 0 + -0.6875 -1.3125x + x2 = 0 + -0.6875 Combine like terms: 0 + -0.6875 = -0.6875 -1.3125x + x2 = -0.6875 The x term is -1.3125x. Take half its coefficient (-0.65625). Square it (0.4306640625) and add it to both sides. Add '0.4306640625' to each side of the equation. -1.3125x + 0.4306640625 + x2 = -0.6875 + 0.4306640625 Reorder the terms: 0.4306640625 + -1.3125x + x2 = -0.6875 + 0.4306640625 Combine like terms: -0.6875 + 0.4306640625 = -0.2568359375 0.4306640625 + -1.3125x + x2 = -0.2568359375 Factor a perfect square on the left side: (x + -0.65625)(x + -0.65625) = -0.2568359375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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