(8k-1)(9k-5)=

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Solution for (8k-1)(9k-5)= equation:


Simplifying
(8k + -1)(9k + -5) = 0

Reorder the terms:
(-1 + 8k)(9k + -5) = 0

Reorder the terms:
(-1 + 8k)(-5 + 9k) = 0

Multiply (-1 + 8k) * (-5 + 9k)
(-1(-5 + 9k) + 8k * (-5 + 9k)) = 0
((-5 * -1 + 9k * -1) + 8k * (-5 + 9k)) = 0
((5 + -9k) + 8k * (-5 + 9k)) = 0
(5 + -9k + (-5 * 8k + 9k * 8k)) = 0
(5 + -9k + (-40k + 72k2)) = 0

Combine like terms: -9k + -40k = -49k
(5 + -49k + 72k2) = 0

Solving
5 + -49k + 72k2 = 0

Solving for variable 'k'.

Factor a trinomial.
(1 + -8k)(5 + -9k) = 0

Subproblem 1

Set the factor '(1 + -8k)' equal to zero and attempt to solve: Simplifying 1 + -8k = 0 Solving 1 + -8k = 0 Move all terms containing k to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -8k = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -8k = 0 + -1 -8k = 0 + -1 Combine like terms: 0 + -1 = -1 -8k = -1 Divide each side by '-8'. k = 0.125 Simplifying k = 0.125

Subproblem 2

Set the factor '(5 + -9k)' equal to zero and attempt to solve: Simplifying 5 + -9k = 0 Solving 5 + -9k = 0 Move all terms containing k to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -9k = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -9k = 0 + -5 -9k = 0 + -5 Combine like terms: 0 + -5 = -5 -9k = -5 Divide each side by '-9'. k = 0.5555555556 Simplifying k = 0.5555555556

Solution

k = {0.125, 0.5555555556}

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