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

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


Simplifying
-4K2 + -8K + -3 = -5K2

Reorder the terms:
-3 + -8K + -4K2 = -5K2

Solving
-3 + -8K + -4K2 = -5K2

Solving for variable 'K'.

Combine like terms: -4K2 + 5K2 = 1K2
-3 + -8K + 1K2 = -5K2 + 5K2

Combine like terms: -5K2 + 5K2 = 0
-3 + -8K + 1K2 = 0

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -8K + 3 + K2 = 0 + 3

Reorder the terms:
-3 + 3 + -8K + K2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -8K + K2 = 0 + 3
-8K + K2 = 0 + 3

Combine like terms: 0 + 3 = 3
-8K + K2 = 3

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 = 3 + 16

Reorder the terms:
16 + -8K + K2 = 3 + 16

Combine like terms: 3 + 16 = 19
16 + -8K + K2 = 19

Factor a perfect square on the left side:
(K + -4)(K + -4) = 19

Calculate the square root of the right side: 4.358898944

Break this problem into two subproblems by setting 
(K + -4) equal to 4.358898944 and -4.358898944.

Subproblem 1

K + -4 = 4.358898944 Simplifying K + -4 = 4.358898944 Reorder the terms: -4 + K = 4.358898944 Solving -4 + K = 4.358898944 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 = 4.358898944 + 4 Combine like terms: -4 + 4 = 0 0 + K = 4.358898944 + 4 K = 4.358898944 + 4 Combine like terms: 4.358898944 + 4 = 8.358898944 K = 8.358898944 Simplifying K = 8.358898944

Subproblem 2

K + -4 = -4.358898944 Simplifying K + -4 = -4.358898944 Reorder the terms: -4 + K = -4.358898944 Solving -4 + K = -4.358898944 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 = -4.358898944 + 4 Combine like terms: -4 + 4 = 0 0 + K = -4.358898944 + 4 K = -4.358898944 + 4 Combine like terms: -4.358898944 + 4 = -0.358898944 K = -0.358898944 Simplifying K = -0.358898944

Solution

The solution to the problem is based on the solutions from the subproblems. K = {8.358898944, -0.358898944}

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