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Simplifying 75x2 + -3 + 7(5x + -1) = 0 Reorder the terms: 75x2 + -3 + 7(-1 + 5x) = 0 75x2 + -3 + (-1 * 7 + 5x * 7) = 0 75x2 + -3 + (-7 + 35x) = 0 Reorder the terms: -3 + -7 + 35x + 75x2 = 0 Combine like terms: -3 + -7 = -10 -10 + 35x + 75x2 = 0 Solving -10 + 35x + 75x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '5'. 5(-2 + 7x + 15x2) = 0 Factor a trinomial. 5((-2 + -3x)(1 + -5x)) = 0 Ignore the factor 5.Subproblem 1
Set the factor '(-2 + -3x)' equal to zero and attempt to solve: Simplifying -2 + -3x = 0 Solving -2 + -3x = 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 + -3x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -3x = 0 + 2 -3x = 0 + 2 Combine like terms: 0 + 2 = 2 -3x = 2 Divide each side by '-3'. x = -0.6666666667 Simplifying x = -0.6666666667Subproblem 2
Set the factor '(1 + -5x)' equal to zero and attempt to solve: Simplifying 1 + -5x = 0 Solving 1 + -5x = 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 + -5x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -5x = 0 + -1 -5x = 0 + -1 Combine like terms: 0 + -1 = -1 -5x = -1 Divide each side by '-5'. x = 0.2 Simplifying x = 0.2Solution
x = {-0.6666666667, 0.2}
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