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Simplifying 2x2 + -8x + 19 = 0 Reorder the terms: 19 + -8x + 2x2 = 0 Solving 19 + -8x + 2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 9.5 + -4x + x2 = 0 Move the constant term to the right: Add '-9.5' to each side of the equation. 9.5 + -4x + -9.5 + x2 = 0 + -9.5 Reorder the terms: 9.5 + -9.5 + -4x + x2 = 0 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + -4x + x2 = 0 + -9.5 -4x + x2 = 0 + -9.5 Combine like terms: 0 + -9.5 = -9.5 -4x + x2 = -9.5 The x term is -4x. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x + 4 + x2 = -9.5 + 4 Reorder the terms: 4 + -4x + x2 = -9.5 + 4 Combine like terms: -9.5 + 4 = -5.5 4 + -4x + x2 = -5.5 Factor a perfect square on the left side: (x + -2)(x + -2) = -5.5 Can't calculate square root of the right side. The solution to this equation could not be determined.
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