7k^2+84=49k

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Solution for 7k^2+84=49k equation:


Simplifying
7k2 + 84 = 49k

Reorder the terms:
84 + 7k2 = 49k

Solving
84 + 7k2 = 49k

Solving for variable 'k'.

Reorder the terms:
84 + -49k + 7k2 = 49k + -49k

Combine like terms: 49k + -49k = 0
84 + -49k + 7k2 = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(12 + -7k + k2) = 0

Factor a trinomial.
7((3 + -1k)(4 + -1k)) = 0

Ignore the factor 7.

Subproblem 1

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

Subproblem 2

Set the factor '(4 + -1k)' equal to zero and attempt to solve: Simplifying 4 + -1k = 0 Solving 4 + -1k = 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 + -1k = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1k = 0 + -4 -1k = 0 + -4 Combine like terms: 0 + -4 = -4 -1k = -4 Divide each side by '-1'. k = 4 Simplifying k = 4

Solution

k = {3, 4}

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