-51-23k=-10k^2+1k

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Solution for -51-23k=-10k^2+1k equation:


Simplifying
-51 + -23k = -10k2 + 1k

Reorder the terms:
-51 + -23k = 1k + -10k2

Solving
-51 + -23k = 1k + -10k2

Solving for variable 'k'.

Combine like terms: -23k + -1k = -24k
-51 + -24k + 10k2 = 1k + -10k2 + -1k + 10k2

Reorder the terms:
-51 + -24k + 10k2 = 1k + -1k + -10k2 + 10k2

Combine like terms: 1k + -1k = 0
-51 + -24k + 10k2 = 0 + -10k2 + 10k2
-51 + -24k + 10k2 = -10k2 + 10k2

Combine like terms: -10k2 + 10k2 = 0
-51 + -24k + 10k2 = 0

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

Divide each side by '10'.
-5.1 + -2.4k + k2 = 0

Move the constant term to the right:

Add '5.1' to each side of the equation.
-5.1 + -2.4k + 5.1 + k2 = 0 + 5.1

Reorder the terms:
-5.1 + 5.1 + -2.4k + k2 = 0 + 5.1

Combine like terms: -5.1 + 5.1 = 0.0
0.0 + -2.4k + k2 = 0 + 5.1
-2.4k + k2 = 0 + 5.1

Combine like terms: 0 + 5.1 = 5.1
-2.4k + k2 = 5.1

The k term is -2.4k.  Take half its coefficient (-1.2).
Square it (1.44) and add it to both sides.

Add '1.44' to each side of the equation.
-2.4k + 1.44 + k2 = 5.1 + 1.44

Reorder the terms:
1.44 + -2.4k + k2 = 5.1 + 1.44

Combine like terms: 5.1 + 1.44 = 6.54
1.44 + -2.4k + k2 = 6.54

Factor a perfect square on the left side:
(k + -1.2)(k + -1.2) = 6.54

Calculate the square root of the right side: 2.557342371

Break this problem into two subproblems by setting 
(k + -1.2) equal to 2.557342371 and -2.557342371.

Subproblem 1

k + -1.2 = 2.557342371 Simplifying k + -1.2 = 2.557342371 Reorder the terms: -1.2 + k = 2.557342371 Solving -1.2 + k = 2.557342371 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '1.2' to each side of the equation. -1.2 + 1.2 + k = 2.557342371 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + k = 2.557342371 + 1.2 k = 2.557342371 + 1.2 Combine like terms: 2.557342371 + 1.2 = 3.757342371 k = 3.757342371 Simplifying k = 3.757342371

Subproblem 2

k + -1.2 = -2.557342371 Simplifying k + -1.2 = -2.557342371 Reorder the terms: -1.2 + k = -2.557342371 Solving -1.2 + k = -2.557342371 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '1.2' to each side of the equation. -1.2 + 1.2 + k = -2.557342371 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + k = -2.557342371 + 1.2 k = -2.557342371 + 1.2 Combine like terms: -2.557342371 + 1.2 = -1.357342371 k = -1.357342371 Simplifying k = -1.357342371

Solution

The solution to the problem is based on the solutions from the subproblems. k = {3.757342371, -1.357342371}

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