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Simplifying (7x + -1)(7x + -1) = 0 Reorder the terms: (-1 + 7x)(7x + -1) = 0 Reorder the terms: (-1 + 7x)(-1 + 7x) = 0 Multiply (-1 + 7x) * (-1 + 7x) (-1(-1 + 7x) + 7x * (-1 + 7x)) = 0 ((-1 * -1 + 7x * -1) + 7x * (-1 + 7x)) = 0 ((1 + -7x) + 7x * (-1 + 7x)) = 0 (1 + -7x + (-1 * 7x + 7x * 7x)) = 0 (1 + -7x + (-7x + 49x2)) = 0 Combine like terms: -7x + -7x = -14x (1 + -14x + 49x2) = 0 Solving 1 + -14x + 49x2 = 0 Solving for variable 'x'. Factor a trinomial. (1 + -7x)(1 + -7x) = 0Subproblem 1
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 = 0.1428571429Subproblem 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 = {0.1428571429, 0.1428571429}
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