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Simplifying 4x2 + -12x + 9 = -4 Reorder the terms: 9 + -12x + 4x2 = -4 Solving 9 + -12x + 4x2 = -4 Solving for variable 'x'. Reorder the terms: 9 + 4 + -12x + 4x2 = -4 + 4 Combine like terms: 9 + 4 = 13 13 + -12x + 4x2 = -4 + 4 Combine like terms: -4 + 4 = 0 13 + -12x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 3.25 + -3x + x2 = 0 Move the constant term to the right: Add '-3.25' to each side of the equation. 3.25 + -3x + -3.25 + x2 = 0 + -3.25 Reorder the terms: 3.25 + -3.25 + -3x + x2 = 0 + -3.25 Combine like terms: 3.25 + -3.25 = 0.00 0.00 + -3x + x2 = 0 + -3.25 -3x + x2 = 0 + -3.25 Combine like terms: 0 + -3.25 = -3.25 -3x + x2 = -3.25 The x term is -3x. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3x + 2.25 + x2 = -3.25 + 2.25 Reorder the terms: 2.25 + -3x + x2 = -3.25 + 2.25 Combine like terms: -3.25 + 2.25 = -1 2.25 + -3x + x2 = -1 Factor a perfect square on the left side: (x + -1.5)(x + -1.5) = -1 Can't calculate square root of the right side. The solution to this equation could not be determined.
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