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Simplifying 0.7x2 + -20x + 230 = 0 Reorder the terms: 230 + -20x + 0.7x2 = 0 Solving 230 + -20x + 0.7x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 0.7 the coefficient of the squared term: Divide each side by '0.7'. 328.5714286 + -28.57142857x + x2 = 0 Move the constant term to the right: Add '-328.5714286' to each side of the equation. 328.5714286 + -28.57142857x + -328.5714286 + x2 = 0 + -328.5714286 Reorder the terms: 328.5714286 + -328.5714286 + -28.57142857x + x2 = 0 + -328.5714286 Combine like terms: 328.5714286 + -328.5714286 = 0.0000000 0.0000000 + -28.57142857x + x2 = 0 + -328.5714286 -28.57142857x + x2 = 0 + -328.5714286 Combine like terms: 0 + -328.5714286 = -328.5714286 -28.57142857x + x2 = -328.5714286 The x term is -28.57142857x. Take half its coefficient (-14.28571429). Square it (204.0816328) and add it to both sides. Add '204.0816328' to each side of the equation. -28.57142857x + 204.0816328 + x2 = -328.5714286 + 204.0816328 Reorder the terms: 204.0816328 + -28.57142857x + x2 = -328.5714286 + 204.0816328 Combine like terms: -328.5714286 + 204.0816328 = -124.4897958 204.0816328 + -28.57142857x + x2 = -124.4897958 Factor a perfect square on the left side: (x + -14.28571429)(x + -14.28571429) = -124.4897958 Can't calculate square root of the right side. The solution to this equation could not be determined.
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