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Simplifying 28x2 + -12x + -1 = 0 Reorder the terms: -1 + -12x + 28x2 = 0 Solving -1 + -12x + 28x2 = 0 Solving for variable 'x'. Factor a trinomial. (-1 + -14x)(1 + -2x) = 0Subproblem 1
Set the factor '(-1 + -14x)' equal to zero and attempt to solve: Simplifying -1 + -14x = 0 Solving -1 + -14x = 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 + -14x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -14x = 0 + 1 -14x = 0 + 1 Combine like terms: 0 + 1 = 1 -14x = 1 Divide each side by '-14'. x = -0.07142857143 Simplifying x = -0.07142857143Subproblem 2
Set the factor '(1 + -2x)' equal to zero and attempt to solve: Simplifying 1 + -2x = 0 Solving 1 + -2x = 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 + -2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2x = 0 + -1 -2x = 0 + -1 Combine like terms: 0 + -1 = -1 -2x = -1 Divide each side by '-2'. x = 0.5 Simplifying x = 0.5Solution
x = {-0.07142857143, 0.5}
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