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Simplifying -10 = 2x3 + -4x2 + 5x + -10 Reorder the terms: -10 = -10 + 5x + -4x2 + 2x3 Add '10' to each side of the equation. -10 + 10 = -10 + 5x + -4x2 + 10 + 2x3 Combine like terms: -10 + 10 = 0 0 = -10 + 5x + -4x2 + 10 + 2x3 Reorder the terms: 0 = -10 + 10 + 5x + -4x2 + 2x3 Combine like terms: -10 + 10 = 0 0 = 0 + 5x + -4x2 + 2x3 0 = 5x + -4x2 + 2x3 Solving 0 = 5x + -4x2 + 2x3 Solving for variable 'x'. Remove the zero: -5x + 4x2 + -2x3 = 5x + -4x2 + 2x3 + -5x + 4x2 + -2x3 Reorder the terms: -5x + 4x2 + -2x3 = 5x + -5x + -4x2 + 4x2 + 2x3 + -2x3 Combine like terms: 5x + -5x = 0 -5x + 4x2 + -2x3 = 0 + -4x2 + 4x2 + 2x3 + -2x3 -5x + 4x2 + -2x3 = -4x2 + 4x2 + 2x3 + -2x3 Combine like terms: -4x2 + 4x2 = 0 -5x + 4x2 + -2x3 = 0 + 2x3 + -2x3 -5x + 4x2 + -2x3 = 2x3 + -2x3 Combine like terms: 2x3 + -2x3 = 0 -5x + 4x2 + -2x3 = 0 Factor out the Greatest Common Factor (GCF), 'x'. x(-5 + 4x + -2x2) = 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 '(-5 + 4x + -2x2)' equal to zero and attempt to solve: Simplifying -5 + 4x + -2x2 = 0 Solving -5 + 4x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. 2.5 + -2x + x2 = 0 Move the constant term to the right: Add '-2.5' to each side of the equation. 2.5 + -2x + -2.5 + x2 = 0 + -2.5 Reorder the terms: 2.5 + -2.5 + -2x + x2 = 0 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + -2x + x2 = 0 + -2.5 -2x + x2 = 0 + -2.5 Combine like terms: 0 + -2.5 = -2.5 -2x + x2 = -2.5 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = -2.5 + 1 Reorder the terms: 1 + -2x + x2 = -2.5 + 1 Combine like terms: -2.5 + 1 = -1.5 1 + -2x + x2 = -1.5 Factor a perfect square on the left side: (x + -1)(x + -1) = -1.5 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.Solution
x = {0}
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