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Simplifying 9X2 + -48X + 80 = 0 Reorder the terms: 80 + -48X + 9X2 = 0 Solving 80 + -48X + 9X2 = 0 Solving for variable 'X'. Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 8.888888889 + -5.333333333X + X2 = 0 Move the constant term to the right: Add '-8.888888889' to each side of the equation. 8.888888889 + -5.333333333X + -8.888888889 + X2 = 0 + -8.888888889 Reorder the terms: 8.888888889 + -8.888888889 + -5.333333333X + X2 = 0 + -8.888888889 Combine like terms: 8.888888889 + -8.888888889 = 0.000000000 0.000000000 + -5.333333333X + X2 = 0 + -8.888888889 -5.333333333X + X2 = 0 + -8.888888889 Combine like terms: 0 + -8.888888889 = -8.888888889 -5.333333333X + X2 = -8.888888889 The X term is -5.333333333X. Take half its coefficient (-2.666666667). Square it (7.111111113) and add it to both sides. Add '7.111111113' to each side of the equation. -5.333333333X + 7.111111113 + X2 = -8.888888889 + 7.111111113 Reorder the terms: 7.111111113 + -5.333333333X + X2 = -8.888888889 + 7.111111113 Combine like terms: -8.888888889 + 7.111111113 = -1.777777776 7.111111113 + -5.333333333X + X2 = -1.777777776 Factor a perfect square on the left side: (X + -2.666666667)(X + -2.666666667) = -1.777777776 Can't calculate square root of the right side. The solution to this equation could not be determined.
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