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Simplifying 0 = -6x2 + 9x + 9 Reorder the terms: 0 = 9 + 9x + -6x2 Solving 0 = 9 + 9x + -6x2 Solving for variable 'x'. Combine like terms: 0 + -9 = -9 -9 + -9x + 6x2 = 9 + 9x + -6x2 + -9 + -9x + 6x2 Reorder the terms: -9 + -9x + 6x2 = 9 + -9 + 9x + -9x + -6x2 + 6x2 Combine like terms: 9 + -9 = 0 -9 + -9x + 6x2 = 0 + 9x + -9x + -6x2 + 6x2 -9 + -9x + 6x2 = 9x + -9x + -6x2 + 6x2 Combine like terms: 9x + -9x = 0 -9 + -9x + 6x2 = 0 + -6x2 + 6x2 -9 + -9x + 6x2 = -6x2 + 6x2 Combine like terms: -6x2 + 6x2 = 0 -9 + -9x + 6x2 = 0 Factor out the Greatest Common Factor (GCF), '3'. 3(-3 + -3x + 2x2) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(-3 + -3x + 2x2)' equal to zero and attempt to solve: Simplifying -3 + -3x + 2x2 = 0 Solving -3 + -3x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -1.5 + -1.5x + x2 = 0 Move the constant term to the right: Add '1.5' to each side of the equation. -1.5 + -1.5x + 1.5 + x2 = 0 + 1.5 Reorder the terms: -1.5 + 1.5 + -1.5x + x2 = 0 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + -1.5x + x2 = 0 + 1.5 -1.5x + x2 = 0 + 1.5 Combine like terms: 0 + 1.5 = 1.5 -1.5x + x2 = 1.5 The x term is -1.5x. Take half its coefficient (-0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. -1.5x + 0.5625 + x2 = 1.5 + 0.5625 Reorder the terms: 0.5625 + -1.5x + x2 = 1.5 + 0.5625 Combine like terms: 1.5 + 0.5625 = 2.0625 0.5625 + -1.5x + x2 = 2.0625 Factor a perfect square on the left side: (x + -0.75)(x + -0.75) = 2.0625 Calculate the square root of the right side: 1.436140662 Break this problem into two subproblems by setting (x + -0.75) equal to 1.436140662 and -1.436140662.Subproblem 1
x + -0.75 = 1.436140662 Simplifying x + -0.75 = 1.436140662 Reorder the terms: -0.75 + x = 1.436140662 Solving -0.75 + x = 1.436140662 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 1.436140662 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 1.436140662 + 0.75 x = 1.436140662 + 0.75 Combine like terms: 1.436140662 + 0.75 = 2.186140662 x = 2.186140662 Simplifying x = 2.186140662Subproblem 2
x + -0.75 = -1.436140662 Simplifying x + -0.75 = -1.436140662 Reorder the terms: -0.75 + x = -1.436140662 Solving -0.75 + x = -1.436140662 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -1.436140662 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -1.436140662 + 0.75 x = -1.436140662 + 0.75 Combine like terms: -1.436140662 + 0.75 = -0.686140662 x = -0.686140662 Simplifying x = -0.686140662Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.186140662, -0.686140662}Solution
x = {2.186140662, -0.686140662}
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