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Simplifying 2x2 + -9x + 12 = -2x + 2 Reorder the terms: 12 + -9x + 2x2 = -2x + 2 Reorder the terms: 12 + -9x + 2x2 = 2 + -2x Solving 12 + -9x + 2x2 = 2 + -2x Solving for variable 'x'. Reorder the terms: 12 + -2 + -9x + 2x + 2x2 = 2 + -2x + -2 + 2x Combine like terms: 12 + -2 = 10 10 + -9x + 2x + 2x2 = 2 + -2x + -2 + 2x Combine like terms: -9x + 2x = -7x 10 + -7x + 2x2 = 2 + -2x + -2 + 2x Reorder the terms: 10 + -7x + 2x2 = 2 + -2 + -2x + 2x Combine like terms: 2 + -2 = 0 10 + -7x + 2x2 = 0 + -2x + 2x 10 + -7x + 2x2 = -2x + 2x Combine like terms: -2x + 2x = 0 10 + -7x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 5 + -3.5x + x2 = 0 Move the constant term to the right: Add '-5' to each side of the equation. 5 + -3.5x + -5 + x2 = 0 + -5 Reorder the terms: 5 + -5 + -3.5x + x2 = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3.5x + x2 = 0 + -5 -3.5x + x2 = 0 + -5 Combine like terms: 0 + -5 = -5 -3.5x + x2 = -5 The x term is -3.5x. Take half its coefficient (-1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. -3.5x + 3.0625 + x2 = -5 + 3.0625 Reorder the terms: 3.0625 + -3.5x + x2 = -5 + 3.0625 Combine like terms: -5 + 3.0625 = -1.9375 3.0625 + -3.5x + x2 = -1.9375 Factor a perfect square on the left side: (x + -1.75)(x + -1.75) = -1.9375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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