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Simplifying (9x2 + 6x + 4) + -1(3x2 + 2 + 6) = 0 Reorder the terms: (4 + 6x + 9x2) + -1(3x2 + 2 + 6) = 0 Remove parenthesis around (4 + 6x + 9x2) 4 + 6x + 9x2 + -1(3x2 + 2 + 6) = 0 Reorder the terms: 4 + 6x + 9x2 + -1(2 + 6 + 3x2) = 0 Combine like terms: 2 + 6 = 8 4 + 6x + 9x2 + -1(8 + 3x2) = 0 4 + 6x + 9x2 + (8 * -1 + 3x2 * -1) = 0 4 + 6x + 9x2 + (-8 + -3x2) = 0 Reorder the terms: 4 + -8 + 6x + 9x2 + -3x2 = 0 Combine like terms: 4 + -8 = -4 -4 + 6x + 9x2 + -3x2 = 0 Combine like terms: 9x2 + -3x2 = 6x2 -4 + 6x + 6x2 = 0 Solving -4 + 6x + 6x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(-2 + 3x + 3x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-2 + 3x + 3x2)' equal to zero and attempt to solve: Simplifying -2 + 3x + 3x2 = 0 Solving -2 + 3x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -0.6666666667 + x + x2 = 0 Move the constant term to the right: Add '0.6666666667' to each side of the equation. -0.6666666667 + x + 0.6666666667 + x2 = 0 + 0.6666666667 Reorder the terms: -0.6666666667 + 0.6666666667 + x + x2 = 0 + 0.6666666667 Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000 0.0000000000 + x + x2 = 0 + 0.6666666667 x + x2 = 0 + 0.6666666667 Combine like terms: 0 + 0.6666666667 = 0.6666666667 x + x2 = 0.6666666667 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. + 0.25 + x2 = 0.6666666667 + 0.25 Combine like terms: + 0.25 = 1.25 1.25 + x2 = 0.6666666667 + 0.25 Combine like terms: 0.6666666667 + 0.25 = 0.9166666667 1.25 + x2 = 0.9166666667 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 0.9166666667 Calculate the square root of the right side: 0.957427108 Break this problem into two subproblems by setting (x + 0.5) equal to 0.957427108 and -0.957427108.Subproblem 1
x + 0.5 = 0.957427108 Simplifying x + 0.5 = 0.957427108 Reorder the terms: 0.5 + x = 0.957427108 Solving 0.5 + x = 0.957427108 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 0.957427108 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.957427108 + -0.5 x = 0.957427108 + -0.5 Combine like terms: 0.957427108 + -0.5 = 0.457427108 x = 0.457427108 Simplifying x = 0.457427108Subproblem 2
x + 0.5 = -0.957427108 Simplifying x + 0.5 = -0.957427108 Reorder the terms: 0.5 + x = -0.957427108 Solving 0.5 + x = -0.957427108 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -0.957427108 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.957427108 + -0.5 x = -0.957427108 + -0.5 Combine like terms: -0.957427108 + -0.5 = -1.457427108 x = -1.457427108 Simplifying x = -1.457427108Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.457427108, -1.457427108}Solution
x = {0.457427108, -1.457427108}
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