c^2(c^2-4)=3c^2-5

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Solution for c^2(c^2-4)=3c^2-5 equation:


Simplifying
c2(c2 + -4) = 3c2 + -5

Reorder the terms:
c2(-4 + c2) = 3c2 + -5
(-4 * c2 + c2 * c2) = 3c2 + -5
(-4c2 + c4) = 3c2 + -5

Reorder the terms:
-4c2 + c4 = -5 + 3c2

Solving
-4c2 + c4 = -5 + 3c2

Solving for variable 'c'.

Reorder the terms:
5 + -4c2 + -3c2 + c4 = -5 + 3c2 + 5 + -3c2

Combine like terms: -4c2 + -3c2 = -7c2
5 + -7c2 + c4 = -5 + 3c2 + 5 + -3c2

Reorder the terms:
5 + -7c2 + c4 = -5 + 5 + 3c2 + -3c2

Combine like terms: -5 + 5 = 0
5 + -7c2 + c4 = 0 + 3c2 + -3c2
5 + -7c2 + c4 = 3c2 + -3c2

Combine like terms: 3c2 + -3c2 = 0
5 + -7c2 + c4 = 0

Begin completing the square.

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -7c2 + -5 + c4 = 0 + -5

Reorder the terms:
5 + -5 + -7c2 + c4 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -7c2 + c4 = 0 + -5
-7c2 + c4 = 0 + -5

Combine like terms: 0 + -5 = -5
-7c2 + c4 = -5

The c term is -7c2.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7c2 + 12.25 + c4 = -5 + 12.25

Reorder the terms:
12.25 + -7c2 + c4 = -5 + 12.25

Combine like terms: -5 + 12.25 = 7.25
12.25 + -7c2 + c4 = 7.25

Factor a perfect square on the left side:
(c2 + -3.5)(c2 + -3.5) = 7.25

Calculate the square root of the right side: 2.692582404

Break this problem into two subproblems by setting 
(c2 + -3.5) equal to 2.692582404 and -2.692582404.

Subproblem 1

c2 + -3.5 = 2.692582404 Simplifying c2 + -3.5 = 2.692582404 Reorder the terms: -3.5 + c2 = 2.692582404 Solving -3.5 + c2 = 2.692582404 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + c2 = 2.692582404 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + c2 = 2.692582404 + 3.5 c2 = 2.692582404 + 3.5 Combine like terms: 2.692582404 + 3.5 = 6.192582404 c2 = 6.192582404 Simplifying c2 = 6.192582404 Take the square root of each side: c = {-2.488489985, 2.488489985}

Subproblem 2

c2 + -3.5 = -2.692582404 Simplifying c2 + -3.5 = -2.692582404 Reorder the terms: -3.5 + c2 = -2.692582404 Solving -3.5 + c2 = -2.692582404 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + c2 = -2.692582404 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + c2 = -2.692582404 + 3.5 c2 = -2.692582404 + 3.5 Combine like terms: -2.692582404 + 3.5 = 0.807417596 c2 = 0.807417596 Simplifying c2 = 0.807417596 Take the square root of each side: c = {-0.898564186, 0.898564186}

Solution

The solution to the problem is based on the solutions from the subproblems. c = {-2.488489985, 2.488489985, -0.898564186, 0.898564186}

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