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Simplifying (z + 6)(z + 9) = 0 Reorder the terms: (6 + z)(z + 9) = 0 Reorder the terms: (6 + z)(9 + z) = 0 Multiply (6 + z) * (9 + z) (6(9 + z) + z(9 + z)) = 0 ((9 * 6 + z * 6) + z(9 + z)) = 0 ((54 + 6z) + z(9 + z)) = 0 (54 + 6z + (9 * z + z * z)) = 0 (54 + 6z + (9z + z2)) = 0 Combine like terms: 6z + 9z = 15z (54 + 15z + z2) = 0 Solving 54 + 15z + z2 = 0 Solving for variable 'z'. Factor a trinomial. (9 + z)(6 + z) = 0Subproblem 1
Set the factor '(9 + z)' equal to zero and attempt to solve: Simplifying 9 + z = 0 Solving 9 + z = 0 Move all terms containing z to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + z = 0 + -9 Combine like terms: 9 + -9 = 0 0 + z = 0 + -9 z = 0 + -9 Combine like terms: 0 + -9 = -9 z = -9 Simplifying z = -9Subproblem 2
Set the factor '(6 + z)' equal to zero and attempt to solve: Simplifying 6 + z = 0 Solving 6 + z = 0 Move all terms containing z to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + z = 0 + -6 Combine like terms: 6 + -6 = 0 0 + z = 0 + -6 z = 0 + -6 Combine like terms: 0 + -6 = -6 z = -6 Simplifying z = -6Solution
z = {-9, -6}
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