7k^2=17+6k

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Solution for 7k^2=17+6k equation:


Simplifying
7k2 = 17 + 6k

Solving
7k2 = 17 + 6k

Solving for variable 'k'.

Reorder the terms:
-17 + -6k + 7k2 = 17 + 6k + -17 + -6k

Reorder the terms:
-17 + -6k + 7k2 = 17 + -17 + 6k + -6k

Combine like terms: 17 + -17 = 0
-17 + -6k + 7k2 = 0 + 6k + -6k
-17 + -6k + 7k2 = 6k + -6k

Combine like terms: 6k + -6k = 0
-17 + -6k + 7k2 = 0

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

Divide each side by '7'.
-2.428571429 + -0.8571428571k + k2 = 0

Move the constant term to the right:

Add '2.428571429' to each side of the equation.
-2.428571429 + -0.8571428571k + 2.428571429 + k2 = 0 + 2.428571429

Reorder the terms:
-2.428571429 + 2.428571429 + -0.8571428571k + k2 = 0 + 2.428571429

Combine like terms: -2.428571429 + 2.428571429 = 0.000000000
0.000000000 + -0.8571428571k + k2 = 0 + 2.428571429
-0.8571428571k + k2 = 0 + 2.428571429

Combine like terms: 0 + 2.428571429 = 2.428571429
-0.8571428571k + k2 = 2.428571429

The k term is -0.8571428571k.  Take half its coefficient (-0.4285714286).
Square it (0.1836734694) and add it to both sides.

Add '0.1836734694' to each side of the equation.
-0.8571428571k + 0.1836734694 + k2 = 2.428571429 + 0.1836734694

Reorder the terms:
0.1836734694 + -0.8571428571k + k2 = 2.428571429 + 0.1836734694

Combine like terms: 2.428571429 + 0.1836734694 = 2.6122448984
0.1836734694 + -0.8571428571k + k2 = 2.6122448984

Factor a perfect square on the left side:
(k + -0.4285714286)(k + -0.4285714286) = 2.6122448984

Calculate the square root of the right side: 1.616244071

Break this problem into two subproblems by setting 
(k + -0.4285714286) equal to 1.616244071 and -1.616244071.

Subproblem 1

k + -0.4285714286 = 1.616244071 Simplifying k + -0.4285714286 = 1.616244071 Reorder the terms: -0.4285714286 + k = 1.616244071 Solving -0.4285714286 + k = 1.616244071 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '0.4285714286' to each side of the equation. -0.4285714286 + 0.4285714286 + k = 1.616244071 + 0.4285714286 Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000 0.0000000000 + k = 1.616244071 + 0.4285714286 k = 1.616244071 + 0.4285714286 Combine like terms: 1.616244071 + 0.4285714286 = 2.0448154996 k = 2.0448154996 Simplifying k = 2.0448154996

Subproblem 2

k + -0.4285714286 = -1.616244071 Simplifying k + -0.4285714286 = -1.616244071 Reorder the terms: -0.4285714286 + k = -1.616244071 Solving -0.4285714286 + k = -1.616244071 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '0.4285714286' to each side of the equation. -0.4285714286 + 0.4285714286 + k = -1.616244071 + 0.4285714286 Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000 0.0000000000 + k = -1.616244071 + 0.4285714286 k = -1.616244071 + 0.4285714286 Combine like terms: -1.616244071 + 0.4285714286 = -1.1876726424 k = -1.1876726424 Simplifying k = -1.1876726424

Solution

The solution to the problem is based on the solutions from the subproblems. k = {2.0448154996, -1.1876726424}

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