x^4-2x^2-2=0

Simple and best practice solution for x^4-2x^2-2=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 x^4-2x^2-2=0 equation:


Simplifying
x4 + -2x2 + -2 = 0

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

Solving
-2 + -2x2 + x4 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -2x2 + 2 + x4 = 0 + 2

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

Combine like terms: -2 + 2 = 0
0 + -2x2 + x4 = 0 + 2
-2x2 + x4 = 0 + 2

Combine like terms: 0 + 2 = 2
-2x2 + x4 = 2

The x term is -2x2.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x2 + 1 + x4 = 2 + 1

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

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

Factor a perfect square on the left side:
(x2 + -1)(x2 + -1) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(x2 + -1) equal to 1.732050808 and -1.732050808.

Subproblem 1

x2 + -1 = 1.732050808 Simplifying x2 + -1 = 1.732050808 Reorder the terms: -1 + x2 = 1.732050808 Solving -1 + x2 = 1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x2 = 1.732050808 + 1 Combine like terms: -1 + 1 = 0 0 + x2 = 1.732050808 + 1 x2 = 1.732050808 + 1 Combine like terms: 1.732050808 + 1 = 2.732050808 x2 = 2.732050808 Simplifying x2 = 2.732050808 Take the square root of each side: x = {-1.65289165, 1.65289165}

Subproblem 2

x2 + -1 = -1.732050808 Simplifying x2 + -1 = -1.732050808 Reorder the terms: -1 + x2 = -1.732050808 Solving -1 + x2 = -1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x2 = -1.732050808 + 1 Combine like terms: -1 + 1 = 0 0 + x2 = -1.732050808 + 1 x2 = -1.732050808 + 1 Combine like terms: -1.732050808 + 1 = -0.732050808 x2 = -0.732050808 Simplifying x2 = -0.732050808 Reorder the terms: 0.732050808 + x2 = -0.732050808 + 0.732050808 Combine like terms: -0.732050808 + 0.732050808 = 0.000000000 0.732050808 + 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:

| 12+8x-(4x-10)+5x= | | -10ew+6=-7w+-9 | | (m-3)x^2-2mx+m+2=0 | | 28-18=x-19 | | 23x-4(4x-7)=28+7x | | 0=2x-(4/3)x | | 10-2m=3m | | 13x+6=11x-8 | | -6x-27=x^2 | | 12=8x-(4x-10) | | w+4=2w | | 11.42=3.2+7.6v+2.9 | | 9+35x-4x^2=0 | | mx^2+2x-m=0 | | 4(3x+-1)+2x=11 | | 2+6w=3w+20 | | Y=m(x+b) | | 1.76=4a-3.6a | | 21+2k=9k | | ab=8-cfora | | -(7/2)r+1(4/5)r=6(4/5) | | 4v=-12v+32 | | 6(x-4)+x=5(x-2) | | 10m-3p-(4m+20p)= | | 16(4y+8)=-8(9y+21) | | -12x+7X=5-2x^2 | | 6-3x=10x+2 | | 19=6+x | | 65x+9= | | 2n-14=-7+3n | | 8m-18=17+m | | 2t+9=17 |

Equations solver categories