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Simplifying 5x(x + 3) = 3 Reorder the terms: 5x(3 + x) = 3 (3 * 5x + x * 5x) = 3 (15x + 5x2) = 3 Solving 15x + 5x2 = 3 Solving for variable 'x'. Reorder the terms: -3 + 15x + 5x2 = 3 + -3 Combine like terms: 3 + -3 = 0 -3 + 15x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -0.6 + 3x + x2 = 0 Move the constant term to the right: Add '0.6' to each side of the equation. -0.6 + 3x + 0.6 + x2 = 0 + 0.6 Reorder the terms: -0.6 + 0.6 + 3x + x2 = 0 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + 3x + x2 = 0 + 0.6 3x + x2 = 0 + 0.6 Combine like terms: 0 + 0.6 = 0.6 3x + x2 = 0.6 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 = 0.6 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 0.6 + 2.25 Combine like terms: 0.6 + 2.25 = 2.85 2.25 + 3x + x2 = 2.85 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 2.85 Calculate the square root of the right side: 1.688194302 Break this problem into two subproblems by setting (x + 1.5) equal to 1.688194302 and -1.688194302.Subproblem 1
x + 1.5 = 1.688194302 Simplifying x + 1.5 = 1.688194302 Reorder the terms: 1.5 + x = 1.688194302 Solving 1.5 + x = 1.688194302 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 = 1.688194302 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 1.688194302 + -1.5 x = 1.688194302 + -1.5 Combine like terms: 1.688194302 + -1.5 = 0.188194302 x = 0.188194302 Simplifying x = 0.188194302Subproblem 2
x + 1.5 = -1.688194302 Simplifying x + 1.5 = -1.688194302 Reorder the terms: 1.5 + x = -1.688194302 Solving 1.5 + x = -1.688194302 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 = -1.688194302 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -1.688194302 + -1.5 x = -1.688194302 + -1.5 Combine like terms: -1.688194302 + -1.5 = -3.188194302 x = -3.188194302 Simplifying x = -3.188194302Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.188194302, -3.188194302}
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