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Simplifying 7z2 + 57z + 8 = 0 Reorder the terms: 8 + 57z + 7z2 = 0 Solving 8 + 57z + 7z2 = 0 Solving for variable 'z'. Factor a trinomial. (8 + z)(1 + 7z) = 0Subproblem 1
Set the factor '(8 + z)' equal to zero and attempt to solve: Simplifying 8 + z = 0 Solving 8 + z = 0 Move all terms containing z to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + z = 0 + -8 Combine like terms: 8 + -8 = 0 0 + z = 0 + -8 z = 0 + -8 Combine like terms: 0 + -8 = -8 z = -8 Simplifying z = -8Subproblem 2
Set the factor '(1 + 7z)' equal to zero and attempt to solve: Simplifying 1 + 7z = 0 Solving 1 + 7z = 0 Move all terms containing z to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 7z = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 7z = 0 + -1 7z = 0 + -1 Combine like terms: 0 + -1 = -1 7z = -1 Divide each side by '7'. z = -0.1428571429 Simplifying z = -0.1428571429Solution
z = {-8, -0.1428571429}
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