12k^2+15k=16k+203

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Solution for 12k^2+15k=16k+203 equation:


Simplifying
12k2 + 15k = 16k + 203

Reorder the terms:
15k + 12k2 = 16k + 203

Reorder the terms:
15k + 12k2 = 203 + 16k

Solving
15k + 12k2 = 203 + 16k

Solving for variable 'k'.

Reorder the terms:
-203 + 15k + -16k + 12k2 = 203 + 16k + -203 + -16k

Combine like terms: 15k + -16k = -1k
-203 + -1k + 12k2 = 203 + 16k + -203 + -16k

Reorder the terms:
-203 + -1k + 12k2 = 203 + -203 + 16k + -16k

Combine like terms: 203 + -203 = 0
-203 + -1k + 12k2 = 0 + 16k + -16k
-203 + -1k + 12k2 = 16k + -16k

Combine like terms: 16k + -16k = 0
-203 + -1k + 12k2 = 0

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

Divide each side by '12'.
-16.91666667 + -0.08333333333k + k2 = 0

Move the constant term to the right:

Add '16.91666667' to each side of the equation.
-16.91666667 + -0.08333333333k + 16.91666667 + k2 = 0 + 16.91666667

Reorder the terms:
-16.91666667 + 16.91666667 + -0.08333333333k + k2 = 0 + 16.91666667

Combine like terms: -16.91666667 + 16.91666667 = 0.00000000
0.00000000 + -0.08333333333k + k2 = 0 + 16.91666667
-0.08333333333k + k2 = 0 + 16.91666667

Combine like terms: 0 + 16.91666667 = 16.91666667
-0.08333333333k + k2 = 16.91666667

The k term is -0.08333333333k.  Take half its coefficient (-0.04166666667).
Square it (0.001736111111) and add it to both sides.

Add '0.001736111111' to each side of the equation.
-0.08333333333k + 0.001736111111 + k2 = 16.91666667 + 0.001736111111

Reorder the terms:
0.001736111111 + -0.08333333333k + k2 = 16.91666667 + 0.001736111111

Combine like terms: 16.91666667 + 0.001736111111 = 16.918402781111
0.001736111111 + -0.08333333333k + k2 = 16.918402781111

Factor a perfect square on the left side:
(k + -0.04166666667)(k + -0.04166666667) = 16.918402781111

Calculate the square root of the right side: 4.113198607

Break this problem into two subproblems by setting 
(k + -0.04166666667) equal to 4.113198607 and -4.113198607.

Subproblem 1

k + -0.04166666667 = 4.113198607 Simplifying k + -0.04166666667 = 4.113198607 Reorder the terms: -0.04166666667 + k = 4.113198607 Solving -0.04166666667 + k = 4.113198607 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '0.04166666667' to each side of the equation. -0.04166666667 + 0.04166666667 + k = 4.113198607 + 0.04166666667 Combine like terms: -0.04166666667 + 0.04166666667 = 0.00000000000 0.00000000000 + k = 4.113198607 + 0.04166666667 k = 4.113198607 + 0.04166666667 Combine like terms: 4.113198607 + 0.04166666667 = 4.15486527367 k = 4.15486527367 Simplifying k = 4.15486527367

Subproblem 2

k + -0.04166666667 = -4.113198607 Simplifying k + -0.04166666667 = -4.113198607 Reorder the terms: -0.04166666667 + k = -4.113198607 Solving -0.04166666667 + k = -4.113198607 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '0.04166666667' to each side of the equation. -0.04166666667 + 0.04166666667 + k = -4.113198607 + 0.04166666667 Combine like terms: -0.04166666667 + 0.04166666667 = 0.00000000000 0.00000000000 + k = -4.113198607 + 0.04166666667 k = -4.113198607 + 0.04166666667 Combine like terms: -4.113198607 + 0.04166666667 = -4.07153194033 k = -4.07153194033 Simplifying k = -4.07153194033

Solution

The solution to the problem is based on the solutions from the subproblems. k = {4.15486527367, -4.07153194033}

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