(3x^4+6x^2-1)-(2x^4-8x^2+5)=

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Solution for (3x^4+6x^2-1)-(2x^4-8x^2+5)= equation:


Simplifying
(3x4 + 6x2 + -1) + -1(2x4 + -8x2 + 5) = 0

Reorder the terms:
(-1 + 6x2 + 3x4) + -1(2x4 + -8x2 + 5) = 0

Remove parenthesis around (-1 + 6x2 + 3x4)
-1 + 6x2 + 3x4 + -1(2x4 + -8x2 + 5) = 0

Reorder the terms:
-1 + 6x2 + 3x4 + -1(5 + -8x2 + 2x4) = 0
-1 + 6x2 + 3x4 + (5 * -1 + -8x2 * -1 + 2x4 * -1) = 0
-1 + 6x2 + 3x4 + (-5 + 8x2 + -2x4) = 0

Reorder the terms:
-1 + -5 + 6x2 + 8x2 + 3x4 + -2x4 = 0

Combine like terms: -1 + -5 = -6
-6 + 6x2 + 8x2 + 3x4 + -2x4 = 0

Combine like terms: 6x2 + 8x2 = 14x2
-6 + 14x2 + 3x4 + -2x4 = 0

Combine like terms: 3x4 + -2x4 = 1x4
-6 + 14x2 + 1x4 = 0

Solving
-6 + 14x2 + 1x4 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + 14x2 + 6 + x4 = 0 + 6

Reorder the terms:
-6 + 6 + 14x2 + x4 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 14x2 + x4 = 0 + 6
14x2 + x4 = 0 + 6

Combine like terms: 0 + 6 = 6
14x2 + x4 = 6

The x term is 14x2.  Take half its coefficient (7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
14x2 + 49 + x4 = 6 + 49

Reorder the terms:
49 + 14x2 + x4 = 6 + 49

Combine like terms: 6 + 49 = 55
49 + 14x2 + x4 = 55

Factor a perfect square on the left side:
(x2 + 7)(x2 + 7) = 55

Calculate the square root of the right side: 7.416198487

Break this problem into two subproblems by setting 
(x2 + 7) equal to 7.416198487 and -7.416198487.

Subproblem 1

x2 + 7 = 7.416198487 Simplifying x2 + 7 = 7.416198487 Reorder the terms: 7 + x2 = 7.416198487 Solving 7 + x2 = 7.416198487 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x2 = 7.416198487 + -7 Combine like terms: 7 + -7 = 0 0 + x2 = 7.416198487 + -7 x2 = 7.416198487 + -7 Combine like terms: 7.416198487 + -7 = 0.416198487 x2 = 0.416198487 Simplifying x2 = 0.416198487 Take the square root of each side: x = {-0.645134472, 0.645134472}

Subproblem 2

x2 + 7 = -7.416198487 Simplifying x2 + 7 = -7.416198487 Reorder the terms: 7 + x2 = -7.416198487 Solving 7 + x2 = -7.416198487 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x2 = -7.416198487 + -7 Combine like terms: 7 + -7 = 0 0 + x2 = -7.416198487 + -7 x2 = -7.416198487 + -7 Combine like terms: -7.416198487 + -7 = -14.416198487 x2 = -14.416198487 Simplifying x2 = -14.416198487 Reorder the terms: 14.416198487 + x2 = -14.416198487 + 14.416198487 Combine like terms: -14.416198487 + 14.416198487 = 0.000000000 14.416198487 + x2 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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