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Simplifying 4x2 + -6x + 3 = -15 Reorder the terms: 3 + -6x + 4x2 = -15 Solving 3 + -6x + 4x2 = -15 Solving for variable 'x'. Reorder the terms: 3 + 15 + -6x + 4x2 = -15 + 15 Combine like terms: 3 + 15 = 18 18 + -6x + 4x2 = -15 + 15 Combine like terms: -15 + 15 = 0 18 + -6x + 4x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(9 + -3x + 2x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(9 + -3x + 2x2)' equal to zero and attempt to solve: Simplifying 9 + -3x + 2x2 = 0 Solving 9 + -3x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 4.5 + -1.5x + x2 = 0 Move the constant term to the right: Add '-4.5' to each side of the equation. 4.5 + -1.5x + -4.5 + x2 = 0 + -4.5 Reorder the terms: 4.5 + -4.5 + -1.5x + x2 = 0 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + -1.5x + x2 = 0 + -4.5 -1.5x + x2 = 0 + -4.5 Combine like terms: 0 + -4.5 = -4.5 -1.5x + x2 = -4.5 The x term is -1.5x. Take half its coefficient (-0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. -1.5x + 0.5625 + x2 = -4.5 + 0.5625 Reorder the terms: 0.5625 + -1.5x + x2 = -4.5 + 0.5625 Combine like terms: -4.5 + 0.5625 = -3.9375 0.5625 + -1.5x + x2 = -3.9375 Factor a perfect square on the left side: (x + -0.75)(x + -0.75) = -3.9375 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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