4k^2-65=7k

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Solution for 4k^2-65=7k equation:


Simplifying
4k2 + -65 = 7k

Reorder the terms:
-65 + 4k2 = 7k

Solving
-65 + 4k2 = 7k

Solving for variable 'k'.

Reorder the terms:
-65 + -7k + 4k2 = 7k + -7k

Combine like terms: 7k + -7k = 0
-65 + -7k + 4k2 = 0

Factor a trinomial.
(-13 + -4k)(5 + -1k) = 0

Subproblem 1

Set the factor '(-13 + -4k)' equal to zero and attempt to solve: Simplifying -13 + -4k = 0 Solving -13 + -4k = 0 Move all terms containing k to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + -4k = 0 + 13 Combine like terms: -13 + 13 = 0 0 + -4k = 0 + 13 -4k = 0 + 13 Combine like terms: 0 + 13 = 13 -4k = 13 Divide each side by '-4'. k = -3.25 Simplifying k = -3.25

Subproblem 2

Set the factor '(5 + -1k)' equal to zero and attempt to solve: Simplifying 5 + -1k = 0 Solving 5 + -1k = 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 + -1k = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1k = 0 + -5 -1k = 0 + -5 Combine like terms: 0 + -5 = -5 -1k = -5 Divide each side by '-1'. k = 5 Simplifying k = 5

Solution

k = {-3.25, 5}

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