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Simplifying 3x2 + -28x + 252 = 0 Reorder the terms: 252 + -28x + 3x2 = 0 Solving 252 + -28x + 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'. 84 + -9.333333333x + x2 = 0 Move the constant term to the right: Add '-84' to each side of the equation. 84 + -9.333333333x + -84 + x2 = 0 + -84 Reorder the terms: 84 + -84 + -9.333333333x + x2 = 0 + -84 Combine like terms: 84 + -84 = 0 0 + -9.333333333x + x2 = 0 + -84 -9.333333333x + x2 = 0 + -84 Combine like terms: 0 + -84 = -84 -9.333333333x + x2 = -84 The x term is -9.333333333x. Take half its coefficient (-4.666666667). Square it (21.77777778) and add it to both sides. Add '21.77777778' to each side of the equation. -9.333333333x + 21.77777778 + x2 = -84 + 21.77777778 Reorder the terms: 21.77777778 + -9.333333333x + x2 = -84 + 21.77777778 Combine like terms: -84 + 21.77777778 = -62.22222222 21.77777778 + -9.333333333x + x2 = -62.22222222 Factor a perfect square on the left side: (x + -4.666666667)(x + -4.666666667) = -62.22222222 Can't calculate square root of the right side. The solution to this equation could not be determined.
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