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Simplifying x3 + 4x2 + -15x = 10x2 + -21x Reorder the terms: -15x + 4x2 + x3 = 10x2 + -21x Reorder the terms: -15x + 4x2 + x3 = -21x + 10x2 Solving -15x + 4x2 + x3 = -21x + 10x2 Solving for variable 'x'. Reorder the terms: -15x + 21x + 4x2 + -10x2 + x3 = -21x + 10x2 + 21x + -10x2 Combine like terms: -15x + 21x = 6x 6x + 4x2 + -10x2 + x3 = -21x + 10x2 + 21x + -10x2 Combine like terms: 4x2 + -10x2 = -6x2 6x + -6x2 + x3 = -21x + 10x2 + 21x + -10x2 Reorder the terms: 6x + -6x2 + x3 = -21x + 21x + 10x2 + -10x2 Combine like terms: -21x + 21x = 0 6x + -6x2 + x3 = 0 + 10x2 + -10x2 6x + -6x2 + x3 = 10x2 + -10x2 Combine like terms: 10x2 + -10x2 = 0 6x + -6x2 + x3 = 0 Factor out the Greatest Common Factor (GCF), 'x'. x(6 + -6x + x2) = 0Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 2
Set the factor '(6 + -6x + x2)' equal to zero and attempt to solve: Simplifying 6 + -6x + x2 = 0 Solving 6 + -6x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-6' to each side of the equation. 6 + -6x + -6 + x2 = 0 + -6 Reorder the terms: 6 + -6 + -6x + x2 = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -6x + x2 = 0 + -6 -6x + x2 = 0 + -6 Combine like terms: 0 + -6 = -6 -6x + x2 = -6 The x term is -6x. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6x + 9 + x2 = -6 + 9 Reorder the terms: 9 + -6x + x2 = -6 + 9 Combine like terms: -6 + 9 = 3 9 + -6x + x2 = 3 Factor a perfect square on the left side: (x + -3)(x + -3) = 3 Calculate the square root of the right side: 1.732050808 Break this problem into two subproblems by setting (x + -3) equal to 1.732050808 and -1.732050808.Subproblem 1
x + -3 = 1.732050808 Simplifying x + -3 = 1.732050808 Reorder the terms: -3 + x = 1.732050808 Solving -3 + x = 1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 1.732050808 + 3 Combine like terms: -3 + 3 = 0 0 + x = 1.732050808 + 3 x = 1.732050808 + 3 Combine like terms: 1.732050808 + 3 = 4.732050808 x = 4.732050808 Simplifying x = 4.732050808Subproblem 2
x + -3 = -1.732050808 Simplifying x + -3 = -1.732050808 Reorder the terms: -3 + x = -1.732050808 Solving -3 + x = -1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -1.732050808 + 3 Combine like terms: -3 + 3 = 0 0 + x = -1.732050808 + 3 x = -1.732050808 + 3 Combine like terms: -1.732050808 + 3 = 1.267949192 x = 1.267949192 Simplifying x = 1.267949192Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.732050808, 1.267949192}Solution
x = {0, 4.732050808, 1.267949192}
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