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Simplifying 0 = -9x2 + 4x Reorder the terms: 0 = 4x + -9x2 Solving 0 = 4x + -9x2 Solving for variable 'x'. Remove the zero: -4x + 9x2 = 4x + -9x2 + -4x + 9x2 Reorder the terms: -4x + 9x2 = 4x + -4x + -9x2 + 9x2 Combine like terms: 4x + -4x = 0 -4x + 9x2 = 0 + -9x2 + 9x2 -4x + 9x2 = -9x2 + 9x2 Combine like terms: -9x2 + 9x2 = 0 -4x + 9x2 = 0 Factor out the Greatest Common Factor (GCF), 'x'. x(-4 + 9x) = 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 '(-4 + 9x)' equal to zero and attempt to solve: Simplifying -4 + 9x = 0 Solving -4 + 9x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + 9x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 9x = 0 + 4 9x = 0 + 4 Combine like terms: 0 + 4 = 4 9x = 4 Divide each side by '9'. x = 0.4444444444 Simplifying x = 0.4444444444Solution
x = {0, 0.4444444444}
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