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Simplifying 6x(5x + 3) = 18 Reorder the terms: 6x(3 + 5x) = 18 (3 * 6x + 5x * 6x) = 18 (18x + 30x2) = 18 Solving 18x + 30x2 = 18 Solving for variable 'x'. Reorder the terms: -18 + 18x + 30x2 = 18 + -18 Combine like terms: 18 + -18 = 0 -18 + 18x + 30x2 = 0 Factor out the Greatest Common Factor (GCF), '6'. 6(-3 + 3x + 5x2) = 0 Ignore the factor 6.Subproblem 1
Set the factor '(-3 + 3x + 5x2)' equal to zero and attempt to solve: Simplifying -3 + 3x + 5x2 = 0 Solving -3 + 3x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -0.6 + 0.6x + x2 = 0 Move the constant term to the right: Add '0.6' to each side of the equation. -0.6 + 0.6x + 0.6 + x2 = 0 + 0.6 Reorder the terms: -0.6 + 0.6 + 0.6x + x2 = 0 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + 0.6x + x2 = 0 + 0.6 0.6x + x2 = 0 + 0.6 Combine like terms: 0 + 0.6 = 0.6 0.6x + x2 = 0.6 The x term is 0.6x. Take half its coefficient (0.3). Square it (0.09) and add it to both sides. Add '0.09' to each side of the equation. 0.6x + 0.09 + x2 = 0.6 + 0.09 Reorder the terms: 0.09 + 0.6x + x2 = 0.6 + 0.09 Combine like terms: 0.6 + 0.09 = 0.69 0.09 + 0.6x + x2 = 0.69 Factor a perfect square on the left side: (x + 0.3)(x + 0.3) = 0.69 Calculate the square root of the right side: 0.830662386 Break this problem into two subproblems by setting (x + 0.3) equal to 0.830662386 and -0.830662386.Subproblem 1
x + 0.3 = 0.830662386 Simplifying x + 0.3 = 0.830662386 Reorder the terms: 0.3 + x = 0.830662386 Solving 0.3 + x = 0.830662386 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3' to each side of the equation. 0.3 + -0.3 + x = 0.830662386 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + x = 0.830662386 + -0.3 x = 0.830662386 + -0.3 Combine like terms: 0.830662386 + -0.3 = 0.530662386 x = 0.530662386 Simplifying x = 0.530662386Subproblem 2
x + 0.3 = -0.830662386 Simplifying x + 0.3 = -0.830662386 Reorder the terms: 0.3 + x = -0.830662386 Solving 0.3 + x = -0.830662386 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3' to each side of the equation. 0.3 + -0.3 + x = -0.830662386 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + x = -0.830662386 + -0.3 x = -0.830662386 + -0.3 Combine like terms: -0.830662386 + -0.3 = -1.130662386 x = -1.130662386 Simplifying x = -1.130662386Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.530662386, -1.130662386}Solution
x = {0.530662386, -1.130662386}
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