9k^2=-9k+28

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Solution for 9k^2=-9k+28 equation:


Simplifying
9k2 = -9k + 28

Reorder the terms:
9k2 = 28 + -9k

Solving
9k2 = 28 + -9k

Solving for variable 'k'.

Reorder the terms:
-28 + 9k + 9k2 = 28 + -9k + -28 + 9k

Reorder the terms:
-28 + 9k + 9k2 = 28 + -28 + -9k + 9k

Combine like terms: 28 + -28 = 0
-28 + 9k + 9k2 = 0 + -9k + 9k
-28 + 9k + 9k2 = -9k + 9k

Combine like terms: -9k + 9k = 0
-28 + 9k + 9k2 = 0

Factor a trinomial.
(-7 + -3k)(4 + -3k) = 0

Subproblem 1

Set the factor '(-7 + -3k)' equal to zero and attempt to solve: Simplifying -7 + -3k = 0 Solving -7 + -3k = 0 Move all terms containing k to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -3k = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -3k = 0 + 7 -3k = 0 + 7 Combine like terms: 0 + 7 = 7 -3k = 7 Divide each side by '-3'. k = -2.333333333 Simplifying k = -2.333333333

Subproblem 2

Set the factor '(4 + -3k)' equal to zero and attempt to solve: Simplifying 4 + -3k = 0 Solving 4 + -3k = 0 Move all terms containing k to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -3k = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -3k = 0 + -4 -3k = 0 + -4 Combine like terms: 0 + -4 = -4 -3k = -4 Divide each side by '-3'. k = 1.333333333 Simplifying k = 1.333333333

Solution

k = {-2.333333333, 1.333333333}

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