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Simplifying 9x2 + 3x = 6x + -15 Reorder the terms: 3x + 9x2 = 6x + -15 Reorder the terms: 3x + 9x2 = -15 + 6x Solving 3x + 9x2 = -15 + 6x Solving for variable 'x'. Reorder the terms: 15 + 3x + -6x + 9x2 = -15 + 6x + 15 + -6x Combine like terms: 3x + -6x = -3x 15 + -3x + 9x2 = -15 + 6x + 15 + -6x Reorder the terms: 15 + -3x + 9x2 = -15 + 15 + 6x + -6x Combine like terms: -15 + 15 = 0 15 + -3x + 9x2 = 0 + 6x + -6x 15 + -3x + 9x2 = 6x + -6x Combine like terms: 6x + -6x = 0 15 + -3x + 9x2 = 0 Factor out the Greatest Common Factor (GCF), '3'. 3(5 + -1x + 3x2) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(5 + -1x + 3x2)' equal to zero and attempt to solve: Simplifying 5 + -1x + 3x2 = 0 Solving 5 + -1x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 1.666666667 + -0.3333333333x + x2 = 0 Move the constant term to the right: Add '-1.666666667' to each side of the equation. 1.666666667 + -0.3333333333x + -1.666666667 + x2 = 0 + -1.666666667 Reorder the terms: 1.666666667 + -1.666666667 + -0.3333333333x + x2 = 0 + -1.666666667 Combine like terms: 1.666666667 + -1.666666667 = 0.000000000 0.000000000 + -0.3333333333x + x2 = 0 + -1.666666667 -0.3333333333x + x2 = 0 + -1.666666667 Combine like terms: 0 + -1.666666667 = -1.666666667 -0.3333333333x + x2 = -1.666666667 The x term is -0.3333333333x. Take half its coefficient (-0.1666666667). Square it (0.02777777779) and add it to both sides. Add '0.02777777779' to each side of the equation. -0.3333333333x + 0.02777777779 + x2 = -1.666666667 + 0.02777777779 Reorder the terms: 0.02777777779 + -0.3333333333x + x2 = -1.666666667 + 0.02777777779 Combine like terms: -1.666666667 + 0.02777777779 = -1.63888888921 0.02777777779 + -0.3333333333x + x2 = -1.63888888921 Factor a perfect square on the left side: (x + -0.1666666667)(x + -0.1666666667) = -1.63888888921 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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