(9-z)(3z+2)=0

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Solution for (9-z)(3z+2)=0 equation:


Simplifying
(9 + -1z)(3z + 2) = 0

Reorder the terms:
(9 + -1z)(2 + 3z) = 0

Multiply (9 + -1z) * (2 + 3z)
(9(2 + 3z) + -1z * (2 + 3z)) = 0
((2 * 9 + 3z * 9) + -1z * (2 + 3z)) = 0
((18 + 27z) + -1z * (2 + 3z)) = 0
(18 + 27z + (2 * -1z + 3z * -1z)) = 0
(18 + 27z + (-2z + -3z2)) = 0

Combine like terms: 27z + -2z = 25z
(18 + 25z + -3z2) = 0

Solving
18 + 25z + -3z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(9 + -1z)(2 + 3z) = 0

Subproblem 1

Set the factor '(9 + -1z)' equal to zero and attempt to solve: Simplifying 9 + -1z = 0 Solving 9 + -1z = 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 + -1z = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1z = 0 + -9 -1z = 0 + -9 Combine like terms: 0 + -9 = -9 -1z = -9 Divide each side by '-1'. z = 9 Simplifying z = 9

Subproblem 2

Set the factor '(2 + 3z)' equal to zero and attempt to solve: Simplifying 2 + 3z = 0 Solving 2 + 3z = 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 + 3z = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3z = 0 + -2 3z = 0 + -2 Combine like terms: 0 + -2 = -2 3z = -2 Divide each side by '3'. z = -0.6666666667 Simplifying z = -0.6666666667

Solution

z = {9, -0.6666666667}

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