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Simplifying 0 = 28x2 + -12x Reorder the terms: 0 = -12x + 28x2 Solving 0 = -12x + 28x2 Solving for variable 'x'. Remove the zero: 12x + -28x2 = -12x + 28x2 + 12x + -28x2 Reorder the terms: 12x + -28x2 = -12x + 12x + 28x2 + -28x2 Combine like terms: -12x + 12x = 0 12x + -28x2 = 0 + 28x2 + -28x2 12x + -28x2 = 28x2 + -28x2 Combine like terms: 28x2 + -28x2 = 0 12x + -28x2 = 0 Factor out the Greatest Common Factor (GCF), '4x'. 4x(3 + -7x) = 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 '(3 + -7x)' equal to zero and attempt to solve: Simplifying 3 + -7x = 0 Solving 3 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -7x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -7x = 0 + -3 -7x = 0 + -3 Combine like terms: 0 + -3 = -3 -7x = -3 Divide each side by '-7'. x = 0.4285714286 Simplifying x = 0.4285714286Solution
x = {0, 0.4285714286}
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