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Simplifying 4.9x2 + -20x + 100 = 0 Reorder the terms: 100 + -20x + 4.9x2 = 0 Solving 100 + -20x + 4.9x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 4.9 the coefficient of the squared term: Divide each side by '4.9'. 20.40816327 + -4.081632653x + x2 = 0 Move the constant term to the right: Add '-20.40816327' to each side of the equation. 20.40816327 + -4.081632653x + -20.40816327 + x2 = 0 + -20.40816327 Reorder the terms: 20.40816327 + -20.40816327 + -4.081632653x + x2 = 0 + -20.40816327 Combine like terms: 20.40816327 + -20.40816327 = 0.00000000 0.00000000 + -4.081632653x + x2 = 0 + -20.40816327 -4.081632653x + x2 = 0 + -20.40816327 Combine like terms: 0 + -20.40816327 = -20.40816327 -4.081632653x + x2 = -20.40816327 The x term is -4.081632653x. Take half its coefficient (-2.040816327). Square it (4.164931281) and add it to both sides. Add '4.164931281' to each side of the equation. -4.081632653x + 4.164931281 + x2 = -20.40816327 + 4.164931281 Reorder the terms: 4.164931281 + -4.081632653x + x2 = -20.40816327 + 4.164931281 Combine like terms: -20.40816327 + 4.164931281 = -16.243231989 4.164931281 + -4.081632653x + x2 = -16.243231989 Factor a perfect square on the left side: (x + -2.040816327)(x + -2.040816327) = -16.243231989 Can't calculate square root of the right side. The solution to this equation could not be determined.
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