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Simplifying -1.29x2 * 25 + -140x2 + -4x = 0.72 Reorder the terms for easier multiplication: -1.29 * 25x2 + -140x2 + -4x = 0.72 Multiply -1.29 * 25 -32.25x2 + -140x2 + -4x = 0.72 Reorder the terms: -4x + -32.25x2 + -140x2 = 0.72 Combine like terms: -32.25x2 + -140x2 = -172.25x2 -4x + -172.25x2 = 0.72 Solving -4x + -172.25x2 = 0.72 Solving for variable 'x'. Reorder the terms: -0.72 + -4x + -172.25x2 = 0.72 + -0.72 Combine like terms: 0.72 + -0.72 = 0.00 -0.72 + -4x + -172.25x2 = 0.00 Begin completing the square. Divide all terms by -172.25 the coefficient of the squared term: Divide each side by '-172.25'. 0.004179970972 + 0.02322206096x + x2 = 0 Move the constant term to the right: Add '-0.004179970972' to each side of the equation. 0.004179970972 + 0.02322206096x + -0.004179970972 + x2 = 0 + -0.004179970972 Reorder the terms: 0.004179970972 + -0.004179970972 + 0.02322206096x + x2 = 0 + -0.004179970972 Combine like terms: 0.004179970972 + -0.004179970972 = 0.000000000000 0.000000000000 + 0.02322206096x + x2 = 0 + -0.004179970972 0.02322206096x + x2 = 0 + -0.004179970972 Combine like terms: 0 + -0.004179970972 = -0.004179970972 0.02322206096x + x2 = -0.004179970972 The x term is 0.02322206096x. Take half its coefficient (0.01161103048). Square it (0.0001348160288) and add it to both sides. Add '0.0001348160288' to each side of the equation. 0.02322206096x + 0.0001348160288 + x2 = -0.004179970972 + 0.0001348160288 Reorder the terms: 0.0001348160288 + 0.02322206096x + x2 = -0.004179970972 + 0.0001348160288 Combine like terms: -0.004179970972 + 0.0001348160288 = -0.0040451549432 0.0001348160288 + 0.02322206096x + x2 = -0.0040451549432 Factor a perfect square on the left side: (x + 0.01161103048)(x + 0.01161103048) = -0.0040451549432 Can't calculate square root of the right side. The solution to this equation could not be determined.
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