(3k-9)(5k-8)=

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Solution for (3k-9)(5k-8)= equation:


Simplifying
(3k + -9)(5k + -8) = 0

Reorder the terms:
(-9 + 3k)(5k + -8) = 0

Reorder the terms:
(-9 + 3k)(-8 + 5k) = 0

Multiply (-9 + 3k) * (-8 + 5k)
(-9(-8 + 5k) + 3k * (-8 + 5k)) = 0
((-8 * -9 + 5k * -9) + 3k * (-8 + 5k)) = 0
((72 + -45k) + 3k * (-8 + 5k)) = 0
(72 + -45k + (-8 * 3k + 5k * 3k)) = 0
(72 + -45k + (-24k + 15k2)) = 0

Combine like terms: -45k + -24k = -69k
(72 + -69k + 15k2) = 0

Solving
72 + -69k + 15k2 = 0

Solving for variable 'k'.

Factor out the Greatest Common Factor (GCF), '3'.
3(24 + -23k + 5k2) = 0

Factor a trinomial.
3((8 + -5k)(3 + -1k)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(8 + -5k)' equal to zero and attempt to solve: Simplifying 8 + -5k = 0 Solving 8 + -5k = 0 Move all terms containing k to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -5k = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -5k = 0 + -8 -5k = 0 + -8 Combine like terms: 0 + -8 = -8 -5k = -8 Divide each side by '-5'. k = 1.6 Simplifying k = 1.6

Subproblem 2

Set the factor '(3 + -1k)' equal to zero and attempt to solve: Simplifying 3 + -1k = 0 Solving 3 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1k = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1k = 0 + -3 -1k = 0 + -3 Combine like terms: 0 + -3 = -3 -1k = -3 Divide each side by '-1'. k = 3 Simplifying k = 3

Solution

k = {1.6, 3}

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