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Simplifying 0 = (7x2 + -1x + -1) + (2x + 1) Reorder the terms: 0 = (-1 + -1x + 7x2) + (2x + 1) Remove parenthesis around (-1 + -1x + 7x2) 0 = -1 + -1x + 7x2 + (2x + 1) Reorder the terms: 0 = -1 + -1x + 7x2 + (1 + 2x) Remove parenthesis around (1 + 2x) 0 = -1 + -1x + 7x2 + 1 + 2x Reorder the terms: 0 = -1 + 1 + -1x + 2x + 7x2 Combine like terms: -1 + 1 = 0 0 = 0 + -1x + 2x + 7x2 0 = -1x + 2x + 7x2 Combine like terms: -1x + 2x = 1x 0 = 1x + 7x2 Solving 0 = 1x + 7x2 Solving for variable 'x'. Remove the zero: -1x + -7x2 = 1x + 7x2 + -1x + -7x2 Reorder the terms: -1x + -7x2 = 1x + -1x + 7x2 + -7x2 Combine like terms: 1x + -1x = 0 -1x + -7x2 = 0 + 7x2 + -7x2 -1x + -7x2 = 7x2 + -7x2 Combine like terms: 7x2 + -7x2 = 0 -1x + -7x2 = 0 Factor out the Greatest Common Factor (GCF), '-1x'. -1x(1 + 7x) = 0 Ignore the factor -1.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 '(1 + 7x)' equal to zero and attempt to solve: Simplifying 1 + 7x = 0 Solving 1 + 7x = 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 + 7x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 7x = 0 + -1 7x = 0 + -1 Combine like terms: 0 + -1 = -1 7x = -1 Divide each side by '7'. x = -0.1428571429 Simplifying x = -0.1428571429Solution
x = {0, -0.1428571429}
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