x^4+3x^2-6=0

Simple and best practice solution for x^4+3x^2-6=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+3x^2-6=0 equation:


Simplifying
x4 + 3x2 + -6 = 0

Reorder the terms:
-6 + 3x2 + x4 = 0

Solving
-6 + 3x2 + x4 = 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 + 3x2 + 6 + x4 = 0 + 6

Reorder the terms:
-6 + 6 + 3x2 + x4 = 0 + 6

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

Combine like terms: 0 + 6 = 6
3x2 + x4 = 6

The x term is 3x2.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x2 + 2.25 + x4 = 6 + 2.25

Reorder the terms:
2.25 + 3x2 + x4 = 6 + 2.25

Combine like terms: 6 + 2.25 = 8.25
2.25 + 3x2 + x4 = 8.25

Factor a perfect square on the left side:
(x2 + 1.5)(x2 + 1.5) = 8.25

Calculate the square root of the right side: 2.872281323

Break this problem into two subproblems by setting 
(x2 + 1.5) equal to 2.872281323 and -2.872281323.

Subproblem 1

x2 + 1.5 = 2.872281323 Simplifying x2 + 1.5 = 2.872281323 Reorder the terms: 1.5 + x2 = 2.872281323 Solving 1.5 + x2 = 2.872281323 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x2 = 2.872281323 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x2 = 2.872281323 + -1.5 x2 = 2.872281323 + -1.5 Combine like terms: 2.872281323 + -1.5 = 1.372281323 x2 = 1.372281323 Simplifying x2 = 1.372281323 Take the square root of each side: x = {-1.171444119, 1.171444119}

Subproblem 2

x2 + 1.5 = -2.872281323 Simplifying x2 + 1.5 = -2.872281323 Reorder the terms: 1.5 + x2 = -2.872281323 Solving 1.5 + x2 = -2.872281323 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x2 = -2.872281323 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x2 = -2.872281323 + -1.5 x2 = -2.872281323 + -1.5 Combine like terms: -2.872281323 + -1.5 = -4.372281323 x2 = -4.372281323 Simplifying x2 = -4.372281323 Reorder the terms: 4.372281323 + x2 = -4.372281323 + 4.372281323 Combine like terms: -4.372281323 + 4.372281323 = 0.000000000 4.372281323 + 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:

| 10(g+5)=2(g+9) | | e=8e | | 1000x-67=678x+783 | | 4x-x=x | | 15a+20a^3= | | x+78=y-23 | | x+20=x-56 | | x+y=x-y | | 89x=198 | | 3x-7+2x=0 | | 2x+6y=9y-12x | | 12x+8-15=-2(3x-83) | | 2y+x=8x-y | | 2e-14=5e | | 5x+4-2=0 | | 7+3x-12x=3x+1 | | -3r+10=15r-8 | | 2x-26/6=-5 | | 5x-8-x=44 | | -7n-9n(n-5)= | | 7x*146=45x | | 4x*3=2x | | -4=n-1 | | 4x*2=24x/2 | | 15=x/11 | | 4x*2=24x/3 | | 5t+16=6-5t | | -7/6v=-14 | | 25/4-(4/15/8/5+1/3)^2 | | 5y^2-30y+60= | | 4x*6=8x/2 | | -9y-21=-4(y+9) |

Equations solver categories