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Simplifying (7x2 + -12) + -1(x2 + 4x + -6) = 0 Reorder the terms: (-12 + 7x2) + -1(x2 + 4x + -6) = 0 Remove parenthesis around (-12 + 7x2) -12 + 7x2 + -1(x2 + 4x + -6) = 0 Reorder the terms: -12 + 7x2 + -1(-6 + 4x + x2) = 0 -12 + 7x2 + (-6 * -1 + 4x * -1 + x2 * -1) = 0 -12 + 7x2 + (6 + -4x + -1x2) = 0 Reorder the terms: -12 + 6 + -4x + 7x2 + -1x2 = 0 Combine like terms: -12 + 6 = -6 -6 + -4x + 7x2 + -1x2 = 0 Combine like terms: 7x2 + -1x2 = 6x2 -6 + -4x + 6x2 = 0 Solving -6 + -4x + 6x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(-3 + -2x + 3x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-3 + -2x + 3x2)' equal to zero and attempt to solve: Simplifying -3 + -2x + 3x2 = 0 Solving -3 + -2x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -1 + -0.6666666667x + x2 = 0 Move the constant term to the right: Add '1' to each side of the equation. -1 + -0.6666666667x + 1 + x2 = 0 + 1 Reorder the terms: -1 + 1 + -0.6666666667x + x2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -0.6666666667x + x2 = 0 + 1 -0.6666666667x + x2 = 0 + 1 Combine like terms: 0 + 1 = 1 -0.6666666667x + x2 = 1 The x term is -0.6666666667x. Take half its coefficient (-0.3333333334). Square it (0.1111111112) and add it to both sides. Add '0.1111111112' to each side of the equation. -0.6666666667x + 0.1111111112 + x2 = 1 + 0.1111111112 Reorder the terms: 0.1111111112 + -0.6666666667x + x2 = 1 + 0.1111111112 Combine like terms: 1 + 0.1111111112 = 1.1111111112 0.1111111112 + -0.6666666667x + x2 = 1.1111111112 Factor a perfect square on the left side: (x + -0.3333333334)(x + -0.3333333334) = 1.1111111112 Calculate the square root of the right side: 1.054092553 Break this problem into two subproblems by setting (x + -0.3333333334) equal to 1.054092553 and -1.054092553.Subproblem 1
x + -0.3333333334 = 1.054092553 Simplifying x + -0.3333333334 = 1.054092553 Reorder the terms: -0.3333333334 + x = 1.054092553 Solving -0.3333333334 + x = 1.054092553 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + x = 1.054092553 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = 1.054092553 + 0.3333333334 x = 1.054092553 + 0.3333333334 Combine like terms: 1.054092553 + 0.3333333334 = 1.3874258864 x = 1.3874258864 Simplifying x = 1.3874258864Subproblem 2
x + -0.3333333334 = -1.054092553 Simplifying x + -0.3333333334 = -1.054092553 Reorder the terms: -0.3333333334 + x = -1.054092553 Solving -0.3333333334 + x = -1.054092553 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + x = -1.054092553 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = -1.054092553 + 0.3333333334 x = -1.054092553 + 0.3333333334 Combine like terms: -1.054092553 + 0.3333333334 = -0.7207592196 x = -0.7207592196 Simplifying x = -0.7207592196Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.3874258864, -0.7207592196}Solution
x = {1.3874258864, -0.7207592196}
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