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Simplifying 6x2 + -72x + 81 = 0 Reorder the terms: 81 + -72x + 6x2 = 0 Solving 81 + -72x + 6x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '3'. 3(27 + -24x + 2x2) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(27 + -24x + 2x2)' equal to zero and attempt to solve: Simplifying 27 + -24x + 2x2 = 0 Solving 27 + -24x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 13.5 + -12x + x2 = 0 Move the constant term to the right: Add '-13.5' to each side of the equation. 13.5 + -12x + -13.5 + x2 = 0 + -13.5 Reorder the terms: 13.5 + -13.5 + -12x + x2 = 0 + -13.5 Combine like terms: 13.5 + -13.5 = 0.0 0.0 + -12x + x2 = 0 + -13.5 -12x + x2 = 0 + -13.5 Combine like terms: 0 + -13.5 = -13.5 -12x + x2 = -13.5 The x term is -12x. Take half its coefficient (-6). Square it (36) and add it to both sides. Add '36' to each side of the equation. -12x + 36 + x2 = -13.5 + 36 Reorder the terms: 36 + -12x + x2 = -13.5 + 36 Combine like terms: -13.5 + 36 = 22.5 36 + -12x + x2 = 22.5 Factor a perfect square on the left side: (x + -6)(x + -6) = 22.5 Calculate the square root of the right side: 4.74341649 Break this problem into two subproblems by setting (x + -6) equal to 4.74341649 and -4.74341649.Subproblem 1
x + -6 = 4.74341649 Simplifying x + -6 = 4.74341649 Reorder the terms: -6 + x = 4.74341649 Solving -6 + x = 4.74341649 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 4.74341649 + 6 Combine like terms: -6 + 6 = 0 0 + x = 4.74341649 + 6 x = 4.74341649 + 6 Combine like terms: 4.74341649 + 6 = 10.74341649 x = 10.74341649 Simplifying x = 10.74341649Subproblem 2
x + -6 = -4.74341649 Simplifying x + -6 = -4.74341649 Reorder the terms: -6 + x = -4.74341649 Solving -6 + x = -4.74341649 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = -4.74341649 + 6 Combine like terms: -6 + 6 = 0 0 + x = -4.74341649 + 6 x = -4.74341649 + 6 Combine like terms: -4.74341649 + 6 = 1.25658351 x = 1.25658351 Simplifying x = 1.25658351Solution
The solution to the problem is based on the solutions from the subproblems. x = {10.74341649, 1.25658351}Solution
x = {10.74341649, 1.25658351}
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