9k^2+4k-28=0

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Solution for 9k^2+4k-28=0 equation:


Simplifying
9k2 + 4k + -28 = 0

Reorder the terms:
-28 + 4k + 9k2 = 0

Solving
-28 + 4k + 9k2 = 0

Solving for variable 'k'.

Factor a trinomial.
(-2 + -1k)(14 + -9k) = 0

Subproblem 1

Set the factor '(-2 + -1k)' equal to zero and attempt to solve: Simplifying -2 + -1k = 0 Solving -2 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1k = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1k = 0 + 2 -1k = 0 + 2 Combine like terms: 0 + 2 = 2 -1k = 2 Divide each side by '-1'. k = -2 Simplifying k = -2

Subproblem 2

Set the factor '(14 + -9k)' equal to zero and attempt to solve: Simplifying 14 + -9k = 0 Solving 14 + -9k = 0 Move all terms containing k to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + -9k = 0 + -14 Combine like terms: 14 + -14 = 0 0 + -9k = 0 + -14 -9k = 0 + -14 Combine like terms: 0 + -14 = -14 -9k = -14 Divide each side by '-9'. k = 1.555555556 Simplifying k = 1.555555556

Solution

k = {-2, 1.555555556}

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