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Simplifying 3x2 + -20x + 3 = 0 Reorder the terms: 3 + -20x + 3x2 = 0 Solving 3 + -20x + 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'. 1 + -6.666666667x + x2 = 0 Move the constant term to the right: Add '-1' to each side of the equation. 1 + -6.666666667x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + -6.666666667x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -6.666666667x + x2 = 0 + -1 -6.666666667x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -6.666666667x + x2 = -1 The x term is -6.666666667x. Take half its coefficient (-3.333333334). Square it (11.11111112) and add it to both sides. Add '11.11111112' to each side of the equation. -6.666666667x + 11.11111112 + x2 = -1 + 11.11111112 Reorder the terms: 11.11111112 + -6.666666667x + x2 = -1 + 11.11111112 Combine like terms: -1 + 11.11111112 = 10.11111112 11.11111112 + -6.666666667x + x2 = 10.11111112 Factor a perfect square on the left side: (x + -3.333333334)(x + -3.333333334) = 10.11111112 Calculate the square root of the right side: 3.179797339 Break this problem into two subproblems by setting (x + -3.333333334) equal to 3.179797339 and -3.179797339.Subproblem 1
x + -3.333333334 = 3.179797339 Simplifying x + -3.333333334 = 3.179797339 Reorder the terms: -3.333333334 + x = 3.179797339 Solving -3.333333334 + x = 3.179797339 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.333333334' to each side of the equation. -3.333333334 + 3.333333334 + x = 3.179797339 + 3.333333334 Combine like terms: -3.333333334 + 3.333333334 = 0.000000000 0.000000000 + x = 3.179797339 + 3.333333334 x = 3.179797339 + 3.333333334 Combine like terms: 3.179797339 + 3.333333334 = 6.513130673 x = 6.513130673 Simplifying x = 6.513130673Subproblem 2
x + -3.333333334 = -3.179797339 Simplifying x + -3.333333334 = -3.179797339 Reorder the terms: -3.333333334 + x = -3.179797339 Solving -3.333333334 + x = -3.179797339 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.333333334' to each side of the equation. -3.333333334 + 3.333333334 + x = -3.179797339 + 3.333333334 Combine like terms: -3.333333334 + 3.333333334 = 0.000000000 0.000000000 + x = -3.179797339 + 3.333333334 x = -3.179797339 + 3.333333334 Combine like terms: -3.179797339 + 3.333333334 = 0.153535995 x = 0.153535995 Simplifying x = 0.153535995Solution
The solution to the problem is based on the solutions from the subproblems. x = {6.513130673, 0.153535995}
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