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Simplifying 3x(6x + -3) = 42 Reorder the terms: 3x(-3 + 6x) = 42 (-3 * 3x + 6x * 3x) = 42 (-9x + 18x2) = 42 Solving -9x + 18x2 = 42 Solving for variable 'x'. Reorder the terms: -42 + -9x + 18x2 = 42 + -42 Combine like terms: 42 + -42 = 0 -42 + -9x + 18x2 = 0 Factor out the Greatest Common Factor (GCF), '3'. 3(-14 + -3x + 6x2) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(-14 + -3x + 6x2)' equal to zero and attempt to solve: Simplifying -14 + -3x + 6x2 = 0 Solving -14 + -3x + 6x2 = 0 Begin completing the square. Divide all terms by 6 the coefficient of the squared term: Divide each side by '6'. -2.333333333 + -0.5x + x2 = 0 Move the constant term to the right: Add '2.333333333' to each side of the equation. -2.333333333 + -0.5x + 2.333333333 + x2 = 0 + 2.333333333 Reorder the terms: -2.333333333 + 2.333333333 + -0.5x + x2 = 0 + 2.333333333 Combine like terms: -2.333333333 + 2.333333333 = 0.000000000 0.000000000 + -0.5x + x2 = 0 + 2.333333333 -0.5x + x2 = 0 + 2.333333333 Combine like terms: 0 + 2.333333333 = 2.333333333 -0.5x + x2 = 2.333333333 The x term is -0.5x. Take half its coefficient (-0.25). Square it (0.0625) and add it to both sides. Add '0.0625' to each side of the equation. -0.5x + 0.0625 + x2 = 2.333333333 + 0.0625 Reorder the terms: 0.0625 + -0.5x + x2 = 2.333333333 + 0.0625 Combine like terms: 2.333333333 + 0.0625 = 2.395833333 0.0625 + -0.5x + x2 = 2.395833333 Factor a perfect square on the left side: (x + -0.25)(x + -0.25) = 2.395833333 Calculate the square root of the right side: 1.547847968 Break this problem into two subproblems by setting (x + -0.25) equal to 1.547847968 and -1.547847968.Subproblem 1
x + -0.25 = 1.547847968 Simplifying x + -0.25 = 1.547847968 Reorder the terms: -0.25 + x = 1.547847968 Solving -0.25 + x = 1.547847968 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 1.547847968 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 1.547847968 + 0.25 x = 1.547847968 + 0.25 Combine like terms: 1.547847968 + 0.25 = 1.797847968 x = 1.797847968 Simplifying x = 1.797847968Subproblem 2
x + -0.25 = -1.547847968 Simplifying x + -0.25 = -1.547847968 Reorder the terms: -0.25 + x = -1.547847968 Solving -0.25 + x = -1.547847968 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -1.547847968 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -1.547847968 + 0.25 x = -1.547847968 + 0.25 Combine like terms: -1.547847968 + 0.25 = -1.297847968 x = -1.297847968 Simplifying x = -1.297847968Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.797847968, -1.297847968}Solution
x = {1.797847968, -1.297847968}
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