2k^2-3+12=k+60

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Solution for 2k^2-3+12=k+60 equation:


Simplifying
2k2 + -3 + 12 = k + 60

Reorder the terms:
-3 + 12 + 2k2 = k + 60

Combine like terms: -3 + 12 = 9
9 + 2k2 = k + 60

Reorder the terms:
9 + 2k2 = 60 + k

Solving
9 + 2k2 = 60 + k

Solving for variable 'k'.

Reorder the terms:
9 + -60 + -1k + 2k2 = 60 + k + -60 + -1k

Combine like terms: 9 + -60 = -51
-51 + -1k + 2k2 = 60 + k + -60 + -1k

Reorder the terms:
-51 + -1k + 2k2 = 60 + -60 + k + -1k

Combine like terms: 60 + -60 = 0
-51 + -1k + 2k2 = 0 + k + -1k
-51 + -1k + 2k2 = k + -1k

Combine like terms: k + -1k = 0
-51 + -1k + 2k2 = 0

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-25.5 + -0.5k + k2 = 0

Move the constant term to the right:

Add '25.5' to each side of the equation.
-25.5 + -0.5k + 25.5 + k2 = 0 + 25.5

Reorder the terms:
-25.5 + 25.5 + -0.5k + k2 = 0 + 25.5

Combine like terms: -25.5 + 25.5 = 0.0
0.0 + -0.5k + k2 = 0 + 25.5
-0.5k + k2 = 0 + 25.5

Combine like terms: 0 + 25.5 = 25.5
-0.5k + k2 = 25.5

The k term is -0.5k.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5k + 0.0625 + k2 = 25.5 + 0.0625

Reorder the terms:
0.0625 + -0.5k + k2 = 25.5 + 0.0625

Combine like terms: 25.5 + 0.0625 = 25.5625
0.0625 + -0.5k + k2 = 25.5625

Factor a perfect square on the left side:
(k + -0.25)(k + -0.25) = 25.5625

Calculate the square root of the right side: 5.055937104

Break this problem into two subproblems by setting 
(k + -0.25) equal to 5.055937104 and -5.055937104.

Subproblem 1

k + -0.25 = 5.055937104 Simplifying k + -0.25 = 5.055937104 Reorder the terms: -0.25 + k = 5.055937104 Solving -0.25 + k = 5.055937104 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + k = 5.055937104 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + k = 5.055937104 + 0.25 k = 5.055937104 + 0.25 Combine like terms: 5.055937104 + 0.25 = 5.305937104 k = 5.305937104 Simplifying k = 5.305937104

Subproblem 2

k + -0.25 = -5.055937104 Simplifying k + -0.25 = -5.055937104 Reorder the terms: -0.25 + k = -5.055937104 Solving -0.25 + k = -5.055937104 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + k = -5.055937104 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + k = -5.055937104 + 0.25 k = -5.055937104 + 0.25 Combine like terms: -5.055937104 + 0.25 = -4.805937104 k = -4.805937104 Simplifying k = -4.805937104

Solution

The solution to the problem is based on the solutions from the subproblems. k = {5.305937104, -4.805937104}

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