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Simplifying 49z2 + 28z + 4 = 0 Reorder the terms: 4 + 28z + 49z2 = 0 Solving 4 + 28z + 49z2 = 0 Solving for variable 'z'. Factor a trinomial. (2 + 7z)(2 + 7z) = 0Subproblem 1
Set the factor '(2 + 7z)' equal to zero and attempt to solve: Simplifying 2 + 7z = 0 Solving 2 + 7z = 0 Move all terms containing z to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 7z = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 7z = 0 + -2 7z = 0 + -2 Combine like terms: 0 + -2 = -2 7z = -2 Divide each side by '7'. z = -0.2857142857 Simplifying z = -0.2857142857Subproblem 2
Set the factor '(2 + 7z)' equal to zero and attempt to solve: Simplifying 2 + 7z = 0 Solving 2 + 7z = 0 Move all terms containing z to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 7z = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 7z = 0 + -2 7z = 0 + -2 Combine like terms: 0 + -2 = -2 7z = -2 Divide each side by '7'. z = -0.2857142857 Simplifying z = -0.2857142857Solution
z = {-0.2857142857, -0.2857142857}
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