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Simplifying 3x(x + -3) = 17 Reorder the terms: 3x(-3 + x) = 17 (-3 * 3x + x * 3x) = 17 (-9x + 3x2) = 17 Solving -9x + 3x2 = 17 Solving for variable 'x'. Reorder the terms: -17 + -9x + 3x2 = 17 + -17 Combine like terms: 17 + -17 = 0 -17 + -9x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -5.666666667 + -3x + x2 = 0 Move the constant term to the right: Add '5.666666667' to each side of the equation. -5.666666667 + -3x + 5.666666667 + x2 = 0 + 5.666666667 Reorder the terms: -5.666666667 + 5.666666667 + -3x + x2 = 0 + 5.666666667 Combine like terms: -5.666666667 + 5.666666667 = 0.000000000 0.000000000 + -3x + x2 = 0 + 5.666666667 -3x + x2 = 0 + 5.666666667 Combine like terms: 0 + 5.666666667 = 5.666666667 -3x + x2 = 5.666666667 The x term is -3x. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3x + 2.25 + x2 = 5.666666667 + 2.25 Reorder the terms: 2.25 + -3x + x2 = 5.666666667 + 2.25 Combine like terms: 5.666666667 + 2.25 = 7.916666667 2.25 + -3x + x2 = 7.916666667 Factor a perfect square on the left side: (x + -1.5)(x + -1.5) = 7.916666667 Calculate the square root of the right side: 2.813657169 Break this problem into two subproblems by setting (x + -1.5) equal to 2.813657169 and -2.813657169.Subproblem 1
x + -1.5 = 2.813657169 Simplifying x + -1.5 = 2.813657169 Reorder the terms: -1.5 + x = 2.813657169 Solving -1.5 + x = 2.813657169 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 2.813657169 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 2.813657169 + 1.5 x = 2.813657169 + 1.5 Combine like terms: 2.813657169 + 1.5 = 4.313657169 x = 4.313657169 Simplifying x = 4.313657169Subproblem 2
x + -1.5 = -2.813657169 Simplifying x + -1.5 = -2.813657169 Reorder the terms: -1.5 + x = -2.813657169 Solving -1.5 + x = -2.813657169 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -2.813657169 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -2.813657169 + 1.5 x = -2.813657169 + 1.5 Combine like terms: -2.813657169 + 1.5 = -1.313657169 x = -1.313657169 Simplifying x = -1.313657169Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.313657169, -1.313657169}
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