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Simplifying 7x3 = 5x2 + 12x Reorder the terms: 7x3 = 12x + 5x2 Solving 7x3 = 12x + 5x2 Solving for variable 'x'. Reorder the terms: -12x + -5x2 + 7x3 = 12x + 5x2 + -12x + -5x2 Reorder the terms: -12x + -5x2 + 7x3 = 12x + -12x + 5x2 + -5x2 Combine like terms: 12x + -12x = 0 -12x + -5x2 + 7x3 = 0 + 5x2 + -5x2 -12x + -5x2 + 7x3 = 5x2 + -5x2 Combine like terms: 5x2 + -5x2 = 0 -12x + -5x2 + 7x3 = 0 Factor out the Greatest Common Factor (GCF), 'x'. x(-12 + -5x + 7x2) = 0 Factor a trinomial. x((-1 + -1x)(12 + -7x)) = 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 '(-1 + -1x)' equal to zero and attempt to solve: Simplifying -1 + -1x = 0 Solving -1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -1x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1x = 0 + 1 -1x = 0 + 1 Combine like terms: 0 + 1 = 1 -1x = 1 Divide each side by '-1'. x = -1 Simplifying x = -1Subproblem 3
Set the factor '(12 + -7x)' equal to zero and attempt to solve: Simplifying 12 + -7x = 0 Solving 12 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + -7x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -7x = 0 + -12 -7x = 0 + -12 Combine like terms: 0 + -12 = -12 -7x = -12 Divide each side by '-7'. x = 1.714285714 Simplifying x = 1.714285714Solution
x = {0, -1, 1.714285714}
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