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Simplifying 2x(x + 3) = -1 Reorder the terms: 2x(3 + x) = -1 (3 * 2x + x * 2x) = -1 (6x + 2x2) = -1 Solving 6x + 2x2 = -1 Solving for variable 'x'. Reorder the terms: 1 + 6x + 2x2 = -1 + 1 Combine like terms: -1 + 1 = 0 1 + 6x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 0.5 + 3x + x2 = 0 Move the constant term to the right: Add '-0.5' to each side of the equation. 0.5 + 3x + -0.5 + x2 = 0 + -0.5 Reorder the terms: 0.5 + -0.5 + 3x + x2 = 0 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + 3x + x2 = 0 + -0.5 3x + x2 = 0 + -0.5 Combine like terms: 0 + -0.5 = -0.5 3x + x2 = -0.5 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 = -0.5 + 2.25 Reorder the terms: 2.25 + 3x + x2 = -0.5 + 2.25 Combine like terms: -0.5 + 2.25 = 1.75 2.25 + 3x + x2 = 1.75 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 1.75 Calculate the square root of the right side: 1.322875656 Break this problem into two subproblems by setting (x + 1.5) equal to 1.322875656 and -1.322875656.Subproblem 1
x + 1.5 = 1.322875656 Simplifying x + 1.5 = 1.322875656 Reorder the terms: 1.5 + x = 1.322875656 Solving 1.5 + x = 1.322875656 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 = 1.322875656 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 1.322875656 + -1.5 x = 1.322875656 + -1.5 Combine like terms: 1.322875656 + -1.5 = -0.177124344 x = -0.177124344 Simplifying x = -0.177124344Subproblem 2
x + 1.5 = -1.322875656 Simplifying x + 1.5 = -1.322875656 Reorder the terms: 1.5 + x = -1.322875656 Solving 1.5 + x = -1.322875656 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 = -1.322875656 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -1.322875656 + -1.5 x = -1.322875656 + -1.5 Combine like terms: -1.322875656 + -1.5 = -2.822875656 x = -2.822875656 Simplifying x = -2.822875656Solution
The solution to the problem is based on the solutions from the subproblems. x = {-0.177124344, -2.822875656}
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