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

Simple and best practice solution for -x^4+4x^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 -x^4+4x^2+1=0 equation:


Simplifying
-1x4 + 4x2 + 1 = 0

Reorder the terms:
1 + 4x2 + -1x4 = 0

Solving
1 + 4x2 + -1x4 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-1 + -4x2 + x4 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -4x2 + 1 + x4 = 0 + 1

Reorder the terms:
-1 + 1 + -4x2 + x4 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -4x2 + x4 = 0 + 1
-4x2 + x4 = 0 + 1

Combine like terms: 0 + 1 = 1
-4x2 + x4 = 1

The x term is -4x2.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x2 + 4 + x4 = 1 + 4

Reorder the terms:
4 + -4x2 + x4 = 1 + 4

Combine like terms: 1 + 4 = 5
4 + -4x2 + x4 = 5

Factor a perfect square on the left side:
(x2 + -2)(x2 + -2) = 5

Calculate the square root of the right side: 2.236067978

Break this problem into two subproblems by setting 
(x2 + -2) equal to 2.236067978 and -2.236067978.

Subproblem 1

x2 + -2 = 2.236067978 Simplifying x2 + -2 = 2.236067978 Reorder the terms: -2 + x2 = 2.236067978 Solving -2 + x2 = 2.236067978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x2 = 2.236067978 + 2 Combine like terms: -2 + 2 = 0 0 + x2 = 2.236067978 + 2 x2 = 2.236067978 + 2 Combine like terms: 2.236067978 + 2 = 4.236067978 x2 = 4.236067978 Simplifying x2 = 4.236067978 Take the square root of each side: x = {-2.058171027, 2.058171027}

Subproblem 2

x2 + -2 = -2.236067978 Simplifying x2 + -2 = -2.236067978 Reorder the terms: -2 + x2 = -2.236067978 Solving -2 + x2 = -2.236067978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x2 = -2.236067978 + 2 Combine like terms: -2 + 2 = 0 0 + x2 = -2.236067978 + 2 x2 = -2.236067978 + 2 Combine like terms: -2.236067978 + 2 = -0.236067978 x2 = -0.236067978 Simplifying x2 = -0.236067978 Reorder the terms: 0.236067978 + x2 = -0.236067978 + 0.236067978 Combine like terms: -0.236067978 + 0.236067978 = 0.000000000 0.236067978 + 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:

| 8x+8=16x-4 | | -4-20= | | m^2-16m-38=10 | | 2x^4-6x+5=0 | | 16x^2-3x=O | | 3/7x-1=2/3(3x-2) | | -3+4(2h-7)= | | 17.90+p*2=29.40 | | 2n^2+n-150=0 | | a^2-5a-20=30 | | Y=logx-2/1-x | | 0.30x+0.30(110)=0.15(150) | | -8p-2+4+7p= | | -7(-6p+6)-3(6p-2)=36 | | 3/10×-1/5=1 | | Ln(3x-15)=8 | | x+11-31=14 | | (12x6y4)/(2x2y2) | | 2(-5+4d)= | | (2/a)^(-3) | | 3y+4y-4=12 | | 12=3y-4+4y | | x^2+16+16= | | x^2-3x+54= | | X/5-24/5x=-1 | | X^2-4x+4x=2 | | 6-7-3= | | 56+85-3b+2b+42=180 | | 5^5*5^1/2/5*^-3 | | -2w+4(8w+6)= | | -25=k+(-27) | | Log216/log6 |

Equations solver categories