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Simplifying 16x2 + -6x = -15 Reorder the terms: -6x + 16x2 = -15 Solving -6x + 16x2 = -15 Solving for variable 'x'. Reorder the terms: 15 + -6x + 16x2 = -15 + 15 Combine like terms: -15 + 15 = 0 15 + -6x + 16x2 = 0 Begin completing the square. Divide all terms by 16 the coefficient of the squared term: Divide each side by '16'. 0.9375 + -0.375x + x2 = 0 Move the constant term to the right: Add '-0.9375' to each side of the equation. 0.9375 + -0.375x + -0.9375 + x2 = 0 + -0.9375 Reorder the terms: 0.9375 + -0.9375 + -0.375x + x2 = 0 + -0.9375 Combine like terms: 0.9375 + -0.9375 = 0.0000 0.0000 + -0.375x + x2 = 0 + -0.9375 -0.375x + x2 = 0 + -0.9375 Combine like terms: 0 + -0.9375 = -0.9375 -0.375x + x2 = -0.9375 The x term is -0.375x. Take half its coefficient (-0.1875). Square it (0.03515625) and add it to both sides. Add '0.03515625' to each side of the equation. -0.375x + 0.03515625 + x2 = -0.9375 + 0.03515625 Reorder the terms: 0.03515625 + -0.375x + x2 = -0.9375 + 0.03515625 Combine like terms: -0.9375 + 0.03515625 = -0.90234375 0.03515625 + -0.375x + x2 = -0.90234375 Factor a perfect square on the left side: (x + -0.1875)(x + -0.1875) = -0.90234375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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