2k^2-14k-30=k^2+3k+30

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Solution for 2k^2-14k-30=k^2+3k+30 equation:


Simplifying
2k2 + -14k + -30 = k2 + 3k + 30

Reorder the terms:
-30 + -14k + 2k2 = k2 + 3k + 30

Reorder the terms:
-30 + -14k + 2k2 = 30 + 3k + k2

Solving
-30 + -14k + 2k2 = 30 + 3k + k2

Solving for variable 'k'.

Reorder the terms:
-30 + -30 + -14k + -3k + 2k2 + -1k2 = 30 + 3k + k2 + -30 + -3k + -1k2

Combine like terms: -30 + -30 = -60
-60 + -14k + -3k + 2k2 + -1k2 = 30 + 3k + k2 + -30 + -3k + -1k2

Combine like terms: -14k + -3k = -17k
-60 + -17k + 2k2 + -1k2 = 30 + 3k + k2 + -30 + -3k + -1k2

Combine like terms: 2k2 + -1k2 = 1k2
-60 + -17k + 1k2 = 30 + 3k + k2 + -30 + -3k + -1k2

Reorder the terms:
-60 + -17k + 1k2 = 30 + -30 + 3k + -3k + k2 + -1k2

Combine like terms: 30 + -30 = 0
-60 + -17k + 1k2 = 0 + 3k + -3k + k2 + -1k2
-60 + -17k + 1k2 = 3k + -3k + k2 + -1k2

Combine like terms: 3k + -3k = 0
-60 + -17k + 1k2 = 0 + k2 + -1k2
-60 + -17k + 1k2 = k2 + -1k2

Combine like terms: k2 + -1k2 = 0
-60 + -17k + 1k2 = 0

Factor a trinomial.
(-3 + -1k)(20 + -1k) = 0

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 '(20 + -1k)' equal to zero and attempt to solve: Simplifying 20 + -1k = 0 Solving 20 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -1k = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -1k = 0 + -20 -1k = 0 + -20 Combine like terms: 0 + -20 = -20 -1k = -20 Divide each side by '-1'. k = 20 Simplifying k = 20

Solution

k = {-3, 20}

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