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Simplifying 5x + -1(4x2 + -4x) + 7x2 = 0 Reorder the terms: 5x + -1(-4x + 4x2) + 7x2 = 0 5x + (-4x * -1 + 4x2 * -1) + 7x2 = 0 5x + (4x + -4x2) + 7x2 = 0 Combine like terms: 5x + 4x = 9x 9x + -4x2 + 7x2 = 0 Combine like terms: -4x2 + 7x2 = 3x2 9x + 3x2 = 0 Solving 9x + 3x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '3x'. 3x(3 + x) = 0 Ignore the factor 3.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 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 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 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3Solution
x = {0, -3}
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