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Simplifying 15 + 4x + 6x2 = 0 Solving 15 + 4x + 6x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 6 the coefficient of the squared term: Divide each side by '6'. 2.5 + 0.6666666667x + x2 = 0 Move the constant term to the right: Add '-2.5' to each side of the equation. 2.5 + 0.6666666667x + -2.5 + x2 = 0 + -2.5 Reorder the terms: 2.5 + -2.5 + 0.6666666667x + x2 = 0 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + 0.6666666667x + x2 = 0 + -2.5 0.6666666667x + x2 = 0 + -2.5 Combine like terms: 0 + -2.5 = -2.5 0.6666666667x + x2 = -2.5 The x term is 0.6666666667x. Take half its coefficient (0.3333333334). Square it (0.1111111112) and add it to both sides. Add '0.1111111112' to each side of the equation. 0.6666666667x + 0.1111111112 + x2 = -2.5 + 0.1111111112 Reorder the terms: 0.1111111112 + 0.6666666667x + x2 = -2.5 + 0.1111111112 Combine like terms: -2.5 + 0.1111111112 = -2.3888888888 0.1111111112 + 0.6666666667x + x2 = -2.3888888888 Factor a perfect square on the left side: (x + 0.3333333334)(x + 0.3333333334) = -2.3888888888 Can't calculate square root of the right side. The solution to this equation could not be determined.
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