5x^4-18x^2+1=0

Simple and best practice solution for 5x^4-18x^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 5x^4-18x^2+1=0 equation:


Simplifying
5x4 + -18x2 + 1 = 0

Reorder the terms:
1 + -18x2 + 5x4 = 0

Solving
1 + -18x2 + 5x4 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
0.2 + -3.6x2 + x4 = 0

Move the constant term to the right:

Add '-0.2' to each side of the equation.
0.2 + -3.6x2 + -0.2 + x4 = 0 + -0.2

Reorder the terms:
0.2 + -0.2 + -3.6x2 + x4 = 0 + -0.2

Combine like terms: 0.2 + -0.2 = 0.0
0.0 + -3.6x2 + x4 = 0 + -0.2
-3.6x2 + x4 = 0 + -0.2

Combine like terms: 0 + -0.2 = -0.2
-3.6x2 + x4 = -0.2

The x term is -3.6x2.  Take half its coefficient (-1.8).
Square it (3.24) and add it to both sides.

Add '3.24' to each side of the equation.
-3.6x2 + 3.24 + x4 = -0.2 + 3.24

Reorder the terms:
3.24 + -3.6x2 + x4 = -0.2 + 3.24

Combine like terms: -0.2 + 3.24 = 3.04
3.24 + -3.6x2 + x4 = 3.04

Factor a perfect square on the left side:
(x2 + -1.8)(x2 + -1.8) = 3.04

Calculate the square root of the right side: 1.743559577

Break this problem into two subproblems by setting 
(x2 + -1.8) equal to 1.743559577 and -1.743559577.

Subproblem 1

x2 + -1.8 = 1.743559577 Simplifying x2 + -1.8 = 1.743559577 Reorder the terms: -1.8 + x2 = 1.743559577 Solving -1.8 + x2 = 1.743559577 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.8' to each side of the equation. -1.8 + 1.8 + x2 = 1.743559577 + 1.8 Combine like terms: -1.8 + 1.8 = 0.0 0.0 + x2 = 1.743559577 + 1.8 x2 = 1.743559577 + 1.8 Combine like terms: 1.743559577 + 1.8 = 3.543559577 x2 = 3.543559577 Simplifying x2 = 3.543559577 Take the square root of each side: x = {-1.882434481, 1.882434481}

Subproblem 2

x2 + -1.8 = -1.743559577 Simplifying x2 + -1.8 = -1.743559577 Reorder the terms: -1.8 + x2 = -1.743559577 Solving -1.8 + x2 = -1.743559577 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.8' to each side of the equation. -1.8 + 1.8 + x2 = -1.743559577 + 1.8 Combine like terms: -1.8 + 1.8 = 0.0 0.0 + x2 = -1.743559577 + 1.8 x2 = -1.743559577 + 1.8 Combine like terms: -1.743559577 + 1.8 = 0.056440423 x2 = 0.056440423 Simplifying x2 = 0.056440423 Take the square root of each side: x = {-0.237571932, 0.237571932}

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.882434481, 1.882434481, -0.237571932, 0.237571932}

See similar equations:

| 5u+6=-14 | | -9=4+v | | 2.14+(-9.58)= | | Y=(6+x)m | | 5(14-U)/8=-5U+10 | | (7/x-5)=(9/x+3) | | 5(14-U)/6=-5U+10 | | 1-0.02(1+200)=0.98x-4 | | 1-0.02(1+200)= | | x^2+54y-1x=3x+2 | | 12.00+(-2.00x)=6 | | x^3+54y*3x-1a=5x | | r-4[1-2(4r+3)]=53 | | x^54y*3x-1a=5x | | 12.00+(-2.00x)=10.00 | | x-0.02(x+200)= | | (y^(1/2))^-3/(y^3)^(1/6) | | 8-x=4x-2-9 | | 3x+10x+9x=15 | | -15.00+(-2.00x)=10 | | 3x+10+9x=15 | | 5(2x+1)=12-3 | | 12/48x3/x | | 0.6(-25x)=y | | 0.6(-25x)= | | .5(4x+8)=1.1-(x+2) | | 4e^9x=8 | | d+5=13 | | 12/48=3x | | 5x^2+2=-11 | | 3/5(-25x) | | 12.00+(-2.00x)=3 |

Equations solver categories