2x^4-56x^2-27=0

Simple and best practice solution for 2x^4-56x^2-27=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 2x^4-56x^2-27=0 equation:


Simplifying
2x4 + -56x2 + -27 = 0

Reorder the terms:
-27 + -56x2 + 2x4 = 0

Solving
-27 + -56x2 + 2x4 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-13.5 + -28x2 + x4 = 0

Move the constant term to the right:

Add '13.5' to each side of the equation.
-13.5 + -28x2 + 13.5 + x4 = 0 + 13.5

Reorder the terms:
-13.5 + 13.5 + -28x2 + x4 = 0 + 13.5

Combine like terms: -13.5 + 13.5 = 0.0
0.0 + -28x2 + x4 = 0 + 13.5
-28x2 + x4 = 0 + 13.5

Combine like terms: 0 + 13.5 = 13.5
-28x2 + x4 = 13.5

The x term is -28x2.  Take half its coefficient (-14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
-28x2 + 196 + x4 = 13.5 + 196

Reorder the terms:
196 + -28x2 + x4 = 13.5 + 196

Combine like terms: 13.5 + 196 = 209.5
196 + -28x2 + x4 = 209.5

Factor a perfect square on the left side:
(x2 + -14)(x2 + -14) = 209.5

Calculate the square root of the right side: 14.474114826

Break this problem into two subproblems by setting 
(x2 + -14) equal to 14.474114826 and -14.474114826.

Subproblem 1

x2 + -14 = 14.474114826 Simplifying x2 + -14 = 14.474114826 Reorder the terms: -14 + x2 = 14.474114826 Solving -14 + x2 = 14.474114826 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + x2 = 14.474114826 + 14 Combine like terms: -14 + 14 = 0 0 + x2 = 14.474114826 + 14 x2 = 14.474114826 + 14 Combine like terms: 14.474114826 + 14 = 28.474114826 x2 = 28.474114826 Simplifying x2 = 28.474114826 Take the square root of each side: x = {-5.336114207, 5.336114207}

Subproblem 2

x2 + -14 = -14.474114826 Simplifying x2 + -14 = -14.474114826 Reorder the terms: -14 + x2 = -14.474114826 Solving -14 + x2 = -14.474114826 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + x2 = -14.474114826 + 14 Combine like terms: -14 + 14 = 0 0 + x2 = -14.474114826 + 14 x2 = -14.474114826 + 14 Combine like terms: -14.474114826 + 14 = -0.474114826 x2 = -0.474114826 Simplifying x2 = -0.474114826 Reorder the terms: 0.474114826 + x2 = -0.474114826 + 0.474114826 Combine like terms: -0.474114826 + 0.474114826 = 0.000000000 0.474114826 + 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:

| 4/15-5/12 | | x-53+96+79=238 | | 3-2(x+5)=4 | | Log[9](270)=x-3 | | 21/3/21/7 | | 3x*(x+2)+((x-1)*(x-1))=x+1 | | 9x^4+14x^2-8=0 | | -11-9/2 | | -5r-7r=6 | | 6p^2-9p=27 | | 6(2z-1)-2(3z)=3 | | x-9/2=10 | | 11b^2-47b-40= | | 7x^2-14x-4=3 | | (x*x)+x(2x-45)=0 | | m(m-1)(m-2)+5m(m-1)+7m+8=0 | | 5(x+6)-2=9x | | x/20=27-x/25 | | x+5=20/x+4 | | 3x+2u=0 | | 6x^2+15=33 | | 1-r= | | -7y=21-x | | x/30=15/18 | | 4x-12=-12x-60 | | x/18=10/9 | | (-3x-12)/7 | | (x-7)*(x-3)+10x=30 | | 15x=6x+18 | | x^2+2x-39=6 | | x/12=5/3 | | -10x-30=-15x |

Equations solver categories