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

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


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

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

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

Combine like terms: 18z + -3z = 15z
(-27 + 15z + 2z2) = 0

Solving
-27 + 15z + 2z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(-9 + -1z)(3 + -2z) = 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 '(3 + -2z)' equal to zero and attempt to solve: Simplifying 3 + -2z = 0 Solving 3 + -2z = 0 Move all terms containing z to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -2z = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -2z = 0 + -3 -2z = 0 + -3 Combine like terms: 0 + -3 = -3 -2z = -3 Divide each side by '-2'. z = 1.5 Simplifying z = 1.5

Solution

z = {-9, 1.5}

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