2k(k+3)=(3k+1)(k+3)

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Solution for 2k(k+3)=(3k+1)(k+3) equation:


Simplifying
2k(k + 3) = (3k + 1)(k + 3)

Reorder the terms:
2k(3 + k) = (3k + 1)(k + 3)
(3 * 2k + k * 2k) = (3k + 1)(k + 3)
(6k + 2k2) = (3k + 1)(k + 3)

Reorder the terms:
6k + 2k2 = (1 + 3k)(k + 3)

Reorder the terms:
6k + 2k2 = (1 + 3k)(3 + k)

Multiply (1 + 3k) * (3 + k)
6k + 2k2 = (1(3 + k) + 3k * (3 + k))
6k + 2k2 = ((3 * 1 + k * 1) + 3k * (3 + k))
6k + 2k2 = ((3 + 1k) + 3k * (3 + k))
6k + 2k2 = (3 + 1k + (3 * 3k + k * 3k))
6k + 2k2 = (3 + 1k + (9k + 3k2))

Combine like terms: 1k + 9k = 10k
6k + 2k2 = (3 + 10k + 3k2)

Solving
6k + 2k2 = 3 + 10k + 3k2

Solving for variable 'k'.

Reorder the terms:
-3 + 6k + -10k + 2k2 + -3k2 = 3 + 10k + 3k2 + -3 + -10k + -3k2

Combine like terms: 6k + -10k = -4k
-3 + -4k + 2k2 + -3k2 = 3 + 10k + 3k2 + -3 + -10k + -3k2

Combine like terms: 2k2 + -3k2 = -1k2
-3 + -4k + -1k2 = 3 + 10k + 3k2 + -3 + -10k + -3k2

Reorder the terms:
-3 + -4k + -1k2 = 3 + -3 + 10k + -10k + 3k2 + -3k2

Combine like terms: 3 + -3 = 0
-3 + -4k + -1k2 = 0 + 10k + -10k + 3k2 + -3k2
-3 + -4k + -1k2 = 10k + -10k + 3k2 + -3k2

Combine like terms: 10k + -10k = 0
-3 + -4k + -1k2 = 0 + 3k2 + -3k2
-3 + -4k + -1k2 = 3k2 + -3k2

Combine like terms: 3k2 + -3k2 = 0
-3 + -4k + -1k2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(3 + 4k + k2) = 0

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

Ignore the factor -1.

Subproblem 1

Set the factor '(3 + k)' equal to zero and attempt to solve: Simplifying 3 + k = 0 Solving 3 + k = 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 + k = 0 + -3 Combine like terms: 3 + -3 = 0 0 + k = 0 + -3 k = 0 + -3 Combine like terms: 0 + -3 = -3 k = -3 Simplifying k = -3

Subproblem 2

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

Solution

k = {-3, -1}

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