2x^4+2x^2-1=0

Simple and best practice solution for 2x^4+2x^2-1=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 2x^4+2x^2-1=0 equation:


Simplifying
2x4 + 2x2 + -1 = 0

Reorder the terms:
-1 + 2x2 + 2x4 = 0

Solving
-1 + 2x2 + 2x4 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-0.5 + x2 + x4 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + x2 + 0.5 + x4 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + x2 + x4 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + x2 + x4 = 0 + 0.5
x2 + x4 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
x2 + x4 = 0.5

The x term is x2.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x4 = 0.5 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x4 = 0.5 + 0.25

Combine like terms: 0.5 + 0.25 = 0.75
1.25 + x4 = 0.75

Factor a perfect square on the left side:
(x2 + 0.5)(x2 + 0.5) = 0.75

Calculate the square root of the right side: 0.866025404

Break this problem into two subproblems by setting 
(x2 + 0.5) equal to 0.866025404 and -0.866025404.

Subproblem 1

x2 + 0.5 = 0.866025404 Simplifying x2 + 0.5 = 0.866025404 Reorder the terms: 0.5 + x2 = 0.866025404 Solving 0.5 + x2 = 0.866025404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x2 = 0.866025404 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x2 = 0.866025404 + -0.5 x2 = 0.866025404 + -0.5 Combine like terms: 0.866025404 + -0.5 = 0.366025404 x2 = 0.366025404 Simplifying x2 = 0.366025404 Take the square root of each side: x = {-0.605000334, 0.605000334}

Subproblem 2

x2 + 0.5 = -0.866025404 Simplifying x2 + 0.5 = -0.866025404 Reorder the terms: 0.5 + x2 = -0.866025404 Solving 0.5 + x2 = -0.866025404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x2 = -0.866025404 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x2 = -0.866025404 + -0.5 x2 = -0.866025404 + -0.5 Combine like terms: -0.866025404 + -0.5 = -1.366025404 x2 = -1.366025404 Simplifying x2 = -1.366025404 Reorder the terms: 1.366025404 + x2 = -1.366025404 + 1.366025404 Combine like terms: -1.366025404 + 1.366025404 = 0.000000000 1.366025404 + 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.

See similar equations:

| 7x^3-7x^2+63x-63= | | -2=3+v | | 16x^3y^3z^4-32x^4y^2z+24x^2yz^3= | | 4(2a-5)=3(3a-8) | | 6+-8x+3x^2=0 | | 2(x-4)=x/5+10 | | 2y+18=3y | | -8x+-5=3x^2 | | 5p+6=5p+8-5 | | x-7=x-1 | | 8x-5=3x^2 | | A=6x^9(5x^5) | | 10x-40=3x | | 2g+2(-7+2g)=1-g | | 6y-5=-3(2+1) | | 5p+7=27 | | 30+2k+5k=10 | | 5p+6=100 | | 4a+5-2a=5 | | x-sqrt(x)-6=0 | | A=2x^3(4x^4) | | -4b+6b=-14 | | c=3000+3r | | -3(-4-6)+7(-y+5)=-8 | | 0.4x+.25(82-x)=27.88 | | (b-c)(a-e)=1600 | | 2/9x-36=-27 | | 7x=(5x+18) | | -8/9(3t+5)=2/3t-12 | | f=(0*9/5)+32 | | 4(x+y)+x= | | 1/2b+5b+30 |

Equations solver categories