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Simplifying 3x2 + -10x + 240 = 0 Reorder the terms: 240 + -10x + 3x2 = 0 Solving 240 + -10x + 3x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 80 + -3.333333333x + x2 = 0 Move the constant term to the right: Add '-80' to each side of the equation. 80 + -3.333333333x + -80 + x2 = 0 + -80 Reorder the terms: 80 + -80 + -3.333333333x + x2 = 0 + -80 Combine like terms: 80 + -80 = 0 0 + -3.333333333x + x2 = 0 + -80 -3.333333333x + x2 = 0 + -80 Combine like terms: 0 + -80 = -80 -3.333333333x + x2 = -80 The x term is -3.333333333x. Take half its coefficient (-1.666666667). Square it (2.777777779) and add it to both sides. Add '2.777777779' to each side of the equation. -3.333333333x + 2.777777779 + x2 = -80 + 2.777777779 Reorder the terms: 2.777777779 + -3.333333333x + x2 = -80 + 2.777777779 Combine like terms: -80 + 2.777777779 = -77.222222221 2.777777779 + -3.333333333x + x2 = -77.222222221 Factor a perfect square on the left side: (x + -1.666666667)(x + -1.666666667) = -77.222222221 Can't calculate square root of the right side. The solution to this equation could not be determined.
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