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Simplifying 81x2 + -1490x + 7100 = 0 Reorder the terms: 7100 + -1490x + 81x2 = 0 Solving 7100 + -1490x + 81x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 81 the coefficient of the squared term: Divide each side by '81'. 87.65432099 + -18.39506173x + x2 = 0 Move the constant term to the right: Add '-87.65432099' to each side of the equation. 87.65432099 + -18.39506173x + -87.65432099 + x2 = 0 + -87.65432099 Reorder the terms: 87.65432099 + -87.65432099 + -18.39506173x + x2 = 0 + -87.65432099 Combine like terms: 87.65432099 + -87.65432099 = 0.00000000 0.00000000 + -18.39506173x + x2 = 0 + -87.65432099 -18.39506173x + x2 = 0 + -87.65432099 Combine like terms: 0 + -87.65432099 = -87.65432099 -18.39506173x + x2 = -87.65432099 The x term is -18.39506173x. Take half its coefficient (-9.197530865). Square it (84.59457401) and add it to both sides. Add '84.59457401' to each side of the equation. -18.39506173x + 84.59457401 + x2 = -87.65432099 + 84.59457401 Reorder the terms: 84.59457401 + -18.39506173x + x2 = -87.65432099 + 84.59457401 Combine like terms: -87.65432099 + 84.59457401 = -3.05974698 84.59457401 + -18.39506173x + x2 = -3.05974698 Factor a perfect square on the left side: (x + -9.197530865)(x + -9.197530865) = -3.05974698 Can't calculate square root of the right side. The solution to this equation could not be determined.
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