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Simplifying 4x3 + 28x2 = -8x2 + -56x Reorder the terms: 28x2 + 4x3 = -8x2 + -56x Reorder the terms: 28x2 + 4x3 = -56x + -8x2 Solving 28x2 + 4x3 = -56x + -8x2 Solving for variable 'x'. Reorder the terms: 56x + 28x2 + 8x2 + 4x3 = -56x + -8x2 + 56x + 8x2 Combine like terms: 28x2 + 8x2 = 36x2 56x + 36x2 + 4x3 = -56x + -8x2 + 56x + 8x2 Reorder the terms: 56x + 36x2 + 4x3 = -56x + 56x + -8x2 + 8x2 Combine like terms: -56x + 56x = 0 56x + 36x2 + 4x3 = 0 + -8x2 + 8x2 56x + 36x2 + 4x3 = -8x2 + 8x2 Combine like terms: -8x2 + 8x2 = 0 56x + 36x2 + 4x3 = 0 Factor out the Greatest Common Factor (GCF), '4x'. 4x(14 + 9x + x2) = 0 Factor a trinomial. 4x((7 + x)(2 + x)) = 0 Ignore the factor 4.Subproblem 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 '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7Subproblem 3
Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2Solution
x = {0, -7, -2}
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