(4z-9)(5z-6)=0

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Solution for (4z-9)(5z-6)=0 equation:


Simplifying
(4z + -9)(5z + -6) = 0

Reorder the terms:
(-9 + 4z)(5z + -6) = 0

Reorder the terms:
(-9 + 4z)(-6 + 5z) = 0

Multiply (-9 + 4z) * (-6 + 5z)
(-9(-6 + 5z) + 4z * (-6 + 5z)) = 0
((-6 * -9 + 5z * -9) + 4z * (-6 + 5z)) = 0
((54 + -45z) + 4z * (-6 + 5z)) = 0
(54 + -45z + (-6 * 4z + 5z * 4z)) = 0
(54 + -45z + (-24z + 20z2)) = 0

Combine like terms: -45z + -24z = -69z
(54 + -69z + 20z2) = 0

Solving
54 + -69z + 20z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(6 + -5z)(9 + -4z) = 0

Subproblem 1

Set the factor '(6 + -5z)' equal to zero and attempt to solve: Simplifying 6 + -5z = 0 Solving 6 + -5z = 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 + -5z = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -5z = 0 + -6 -5z = 0 + -6 Combine like terms: 0 + -6 = -6 -5z = -6 Divide each side by '-5'. z = 1.2 Simplifying z = 1.2

Subproblem 2

Set the factor '(9 + -4z)' equal to zero and attempt to solve: Simplifying 9 + -4z = 0 Solving 9 + -4z = 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 + -4z = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -4z = 0 + -9 -4z = 0 + -9 Combine like terms: 0 + -9 = -9 -4z = -9 Divide each side by '-4'. z = 2.25 Simplifying z = 2.25

Solution

z = {1.2, 2.25}

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