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Simplifying -4.9x2 + 15x + -69 = 0 Reorder the terms: -69 + 15x + -4.9x2 = 0 Solving -69 + 15x + -4.9x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -4.9 the coefficient of the squared term: Divide each side by '-4.9'. 14.08163265 + -3.06122449x + x2 = 0 Move the constant term to the right: Add '-14.08163265' to each side of the equation. 14.08163265 + -3.06122449x + -14.08163265 + x2 = 0 + -14.08163265 Reorder the terms: 14.08163265 + -14.08163265 + -3.06122449x + x2 = 0 + -14.08163265 Combine like terms: 14.08163265 + -14.08163265 = 0.00000000 0.00000000 + -3.06122449x + x2 = 0 + -14.08163265 -3.06122449x + x2 = 0 + -14.08163265 Combine like terms: 0 + -14.08163265 = -14.08163265 -3.06122449x + x2 = -14.08163265 The x term is -3.06122449x. Take half its coefficient (-1.530612245). Square it (2.342773845) and add it to both sides. Add '2.342773845' to each side of the equation. -3.06122449x + 2.342773845 + x2 = -14.08163265 + 2.342773845 Reorder the terms: 2.342773845 + -3.06122449x + x2 = -14.08163265 + 2.342773845 Combine like terms: -14.08163265 + 2.342773845 = -11.738858805 2.342773845 + -3.06122449x + x2 = -11.738858805 Factor a perfect square on the left side: (x + -1.530612245)(x + -1.530612245) = -11.738858805 Can't calculate square root of the right side. The solution to this equation could not be determined.
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