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Simplifying (4x + 3) + (5x2 + -2x) + -1(2x2 + -9) = 0 Reorder the terms: (3 + 4x) + (5x2 + -2x) + -1(2x2 + -9) = 0 Remove parenthesis around (3 + 4x) 3 + 4x + (5x2 + -2x) + -1(2x2 + -9) = 0 Reorder the terms: 3 + 4x + (-2x + 5x2) + -1(2x2 + -9) = 0 Remove parenthesis around (-2x + 5x2) 3 + 4x + -2x + 5x2 + -1(2x2 + -9) = 0 Reorder the terms: 3 + 4x + -2x + 5x2 + -1(-9 + 2x2) = 0 3 + 4x + -2x + 5x2 + (-9 * -1 + 2x2 * -1) = 0 3 + 4x + -2x + 5x2 + (9 + -2x2) = 0 Reorder the terms: 3 + 9 + 4x + -2x + 5x2 + -2x2 = 0 Combine like terms: 3 + 9 = 12 12 + 4x + -2x + 5x2 + -2x2 = 0 Combine like terms: 4x + -2x = 2x 12 + 2x + 5x2 + -2x2 = 0 Combine like terms: 5x2 + -2x2 = 3x2 12 + 2x + 3x2 = 0 Solving 12 + 2x + 3x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 4 + 0.6666666667x + x2 = 0 Move the constant term to the right: Add '-4' to each side of the equation. 4 + 0.6666666667x + -4 + x2 = 0 + -4 Reorder the terms: 4 + -4 + 0.6666666667x + x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 0.6666666667x + x2 = 0 + -4 0.6666666667x + x2 = 0 + -4 Combine like terms: 0 + -4 = -4 0.6666666667x + x2 = -4 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 = -4 + 0.1111111112 Reorder the terms: 0.1111111112 + 0.6666666667x + x2 = -4 + 0.1111111112 Combine like terms: -4 + 0.1111111112 = -3.8888888888 0.1111111112 + 0.6666666667x + x2 = -3.8888888888 Factor a perfect square on the left side: (x + 0.3333333334)(x + 0.3333333334) = -3.8888888888 Can't calculate square root of the right side. The solution to this equation could not be determined.
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