-4k^2-2-8k-3=-3-5k^2

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Solution for -4k^2-2-8k-3=-3-5k^2 equation:


Simplifying
-4k2 + -2 + -8k + -3 = -3 + -5k2

Reorder the terms:
-2 + -3 + -8k + -4k2 = -3 + -5k2

Combine like terms: -2 + -3 = -5
-5 + -8k + -4k2 = -3 + -5k2

Solving
-5 + -8k + -4k2 = -3 + -5k2

Solving for variable 'k'.

Reorder the terms:
-5 + 3 + -8k + -4k2 + 5k2 = -3 + -5k2 + 3 + 5k2

Combine like terms: -5 + 3 = -2
-2 + -8k + -4k2 + 5k2 = -3 + -5k2 + 3 + 5k2

Combine like terms: -4k2 + 5k2 = 1k2
-2 + -8k + 1k2 = -3 + -5k2 + 3 + 5k2

Reorder the terms:
-2 + -8k + 1k2 = -3 + 3 + -5k2 + 5k2

Combine like terms: -3 + 3 = 0
-2 + -8k + 1k2 = 0 + -5k2 + 5k2
-2 + -8k + 1k2 = -5k2 + 5k2

Combine like terms: -5k2 + 5k2 = 0
-2 + -8k + 1k2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -8k + 2 + k2 = 0 + 2

Reorder the terms:
-2 + 2 + -8k + k2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -8k + k2 = 0 + 2
-8k + k2 = 0 + 2

Combine like terms: 0 + 2 = 2
-8k + k2 = 2

The k term is -8k.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8k + 16 + k2 = 2 + 16

Reorder the terms:
16 + -8k + k2 = 2 + 16

Combine like terms: 2 + 16 = 18
16 + -8k + k2 = 18

Factor a perfect square on the left side:
(k + -4)(k + -4) = 18

Calculate the square root of the right side: 4.242640687

Break this problem into two subproblems by setting 
(k + -4) equal to 4.242640687 and -4.242640687.

Subproblem 1

k + -4 = 4.242640687 Simplifying k + -4 = 4.242640687 Reorder the terms: -4 + k = 4.242640687 Solving -4 + k = 4.242640687 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + k = 4.242640687 + 4 Combine like terms: -4 + 4 = 0 0 + k = 4.242640687 + 4 k = 4.242640687 + 4 Combine like terms: 4.242640687 + 4 = 8.242640687 k = 8.242640687 Simplifying k = 8.242640687

Subproblem 2

k + -4 = -4.242640687 Simplifying k + -4 = -4.242640687 Reorder the terms: -4 + k = -4.242640687 Solving -4 + k = -4.242640687 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + k = -4.242640687 + 4 Combine like terms: -4 + 4 = 0 0 + k = -4.242640687 + 4 k = -4.242640687 + 4 Combine like terms: -4.242640687 + 4 = -0.242640687 k = -0.242640687 Simplifying k = -0.242640687

Solution

The solution to the problem is based on the solutions from the subproblems. k = {8.242640687, -0.242640687}

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