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Simplifying (7x + 1)(7x + 1) = 16 Reorder the terms: (1 + 7x)(7x + 1) = 16 Reorder the terms: (1 + 7x)(1 + 7x) = 16 Multiply (1 + 7x) * (1 + 7x) (1(1 + 7x) + 7x * (1 + 7x)) = 16 ((1 * 1 + 7x * 1) + 7x * (1 + 7x)) = 16 ((1 + 7x) + 7x * (1 + 7x)) = 16 (1 + 7x + (1 * 7x + 7x * 7x)) = 16 (1 + 7x + (7x + 49x2)) = 16 Combine like terms: 7x + 7x = 14x (1 + 14x + 49x2) = 16 Solving 1 + 14x + 49x2 = 16 Solving for variable 'x'. Reorder the terms: 1 + -16 + 14x + 49x2 = 16 + -16 Combine like terms: 1 + -16 = -15 -15 + 14x + 49x2 = 16 + -16 Combine like terms: 16 + -16 = 0 -15 + 14x + 49x2 = 0 Factor a trinomial. (-5 + -7x)(3 + -7x) = 0Subproblem 1
Set the factor '(-5 + -7x)' equal to zero and attempt to solve: Simplifying -5 + -7x = 0 Solving -5 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -7x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -7x = 0 + 5 -7x = 0 + 5 Combine like terms: 0 + 5 = 5 -7x = 5 Divide each side by '-7'. x = -0.7142857143 Simplifying x = -0.7142857143Subproblem 2
Set the factor '(3 + -7x)' equal to zero and attempt to solve: Simplifying 3 + -7x = 0 Solving 3 + -7x = 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 + -7x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -7x = 0 + -3 -7x = 0 + -3 Combine like terms: 0 + -3 = -3 -7x = -3 Divide each side by '-7'. x = 0.4285714286 Simplifying x = 0.4285714286Solution
x = {-0.7142857143, 0.4285714286}
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