3x^4+4x^2-1=0

Simple and best practice solution for 3x^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 3x^4+4x^2-1=0 equation:


Simplifying
3x4 + 4x2 + -1 = 0

Reorder the terms:
-1 + 4x2 + 3x4 = 0

Solving
-1 + 4x2 + 3x4 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-0.3333333333 + 1.333333333x2 + x4 = 0

Move the constant term to the right:

Add '0.3333333333' to each side of the equation.
-0.3333333333 + 1.333333333x2 + 0.3333333333 + x4 = 0 + 0.3333333333

Reorder the terms:
-0.3333333333 + 0.3333333333 + 1.333333333x2 + x4 = 0 + 0.3333333333

Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000
0.0000000000 + 1.333333333x2 + x4 = 0 + 0.3333333333
1.333333333x2 + x4 = 0 + 0.3333333333

Combine like terms: 0 + 0.3333333333 = 0.3333333333
1.333333333x2 + x4 = 0.3333333333

The x term is 1.333333333x2.  Take half its coefficient (0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
1.333333333x2 + 0.4444444442 + x4 = 0.3333333333 + 0.4444444442

Reorder the terms:
0.4444444442 + 1.333333333x2 + x4 = 0.3333333333 + 0.4444444442

Combine like terms: 0.3333333333 + 0.4444444442 = 0.7777777775
0.4444444442 + 1.333333333x2 + x4 = 0.7777777775

Factor a perfect square on the left side:
(x2 + 0.6666666665)(x2 + 0.6666666665) = 0.7777777775

Calculate the square root of the right side: 0.881917104

Break this problem into two subproblems by setting 
(x2 + 0.6666666665) equal to 0.881917104 and -0.881917104.

Subproblem 1

x2 + 0.6666666665 = 0.881917104 Simplifying x2 + 0.6666666665 = 0.881917104 Reorder the terms: 0.6666666665 + x2 = 0.881917104 Solving 0.6666666665 + x2 = 0.881917104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x2 = 0.881917104 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x2 = 0.881917104 + -0.6666666665 x2 = 0.881917104 + -0.6666666665 Combine like terms: 0.881917104 + -0.6666666665 = 0.2152504375 x2 = 0.2152504375 Simplifying x2 = 0.2152504375 Take the square root of each side: x = {-0.4639509, 0.4639509}

Subproblem 2

x2 + 0.6666666665 = -0.881917104 Simplifying x2 + 0.6666666665 = -0.881917104 Reorder the terms: 0.6666666665 + x2 = -0.881917104 Solving 0.6666666665 + x2 = -0.881917104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x2 = -0.881917104 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x2 = -0.881917104 + -0.6666666665 x2 = -0.881917104 + -0.6666666665 Combine like terms: -0.881917104 + -0.6666666665 = -1.5485837705 x2 = -1.5485837705 Simplifying x2 = -1.5485837705 Reorder the terms: 1.5485837705 + x2 = -1.5485837705 + 1.5485837705 Combine like terms: -1.5485837705 + 1.5485837705 = 0.0000000000 1.5485837705 + x2 = 0.0000000000 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:

| Y-4+3y=8+y | | 8x-7=137 | | b+12=7 | | 7(y+2)-5=7a+9 | | 4y-9=3y+13 | | -3(1+8m)=2m-29 | | 3(y-4)+6=2 | | 4x+7+47=180 | | 16+4n=8(2+8n) | | 6(w-9)=5(5+w) | | 16y+2=2(8y+1)+y | | 4y-5=5y-1 | | (w+7)(w+7)=2w^2+11w+39 | | 6(-6v+2)=40-8v | | 2(2y+1)-3(y-5)=18 | | 7(2-7k)+1=15-k | | s-9=20 | | 4y-5+y+16=7y+20-5y | | -7(n-9)=-8n | | 4n+4(-3n-1)=-4-3n | | 3x-3+2x-1+3x=180 | | 6(n-5)=7n-24 | | 9x-99=(-2x)+88 | | 2(x-3)=(2x+2) | | 3x^3+6x^2+3x-16=0 | | 5x+9-2x=45 | | 8(1-8v)=8-6v | | x+2.5=5.2 | | -21-8k=-3(4k+6)+k | | 30-6x=-3(6x-2) | | (x-5)/7=1-x/5 | | x^2+167x=6761 |

Equations solver categories