a^4+2a^2-2=0

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


Simplifying
a4 + 2a2 + -2 = 0

Reorder the terms:
-2 + 2a2 + a4 = 0

Solving
-2 + 2a2 + a4 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 2a2 + 2 + a4 = 0 + 2

Reorder the terms:
-2 + 2 + 2a2 + a4 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 2a2 + a4 = 0 + 2
2a2 + a4 = 0 + 2

Combine like terms: 0 + 2 = 2
2a2 + a4 = 2

The a term is 2a2.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2a2 + 1 + a4 = 2 + 1

Reorder the terms:
1 + 2a2 + a4 = 2 + 1

Combine like terms: 2 + 1 = 3
1 + 2a2 + a4 = 3

Factor a perfect square on the left side:
(a2 + 1)(a2 + 1) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(a2 + 1) equal to 1.732050808 and -1.732050808.

Subproblem 1

a2 + 1 = 1.732050808 Simplifying a2 + 1 = 1.732050808 Reorder the terms: 1 + a2 = 1.732050808 Solving 1 + a2 = 1.732050808 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + a2 = 1.732050808 + -1 Combine like terms: 1 + -1 = 0 0 + a2 = 1.732050808 + -1 a2 = 1.732050808 + -1 Combine like terms: 1.732050808 + -1 = 0.732050808 a2 = 0.732050808 Simplifying a2 = 0.732050808 Take the square root of each side: a = {-0.855599677, 0.855599677}

Subproblem 2

a2 + 1 = -1.732050808 Simplifying a2 + 1 = -1.732050808 Reorder the terms: 1 + a2 = -1.732050808 Solving 1 + a2 = -1.732050808 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + a2 = -1.732050808 + -1 Combine like terms: 1 + -1 = 0 0 + a2 = -1.732050808 + -1 a2 = -1.732050808 + -1 Combine like terms: -1.732050808 + -1 = -2.732050808 a2 = -2.732050808 Simplifying a2 = -2.732050808 Reorder the terms: 2.732050808 + a2 = -2.732050808 + 2.732050808 Combine like terms: -2.732050808 + 2.732050808 = 0.000000000 2.732050808 + a2 = 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:

| (n-4)(n-2)=0 | | 6x-11-13x=7-5x | | 7.(3+2)=7.n | | =(-6x^3y)(x^7y^5) | | 7.(3+2)=7. | | 2c-10=22 | | (8-3i)(-6-10i)= | | 3x^2-5x+2=o | | 0.25e-14=26 | | -|x|=3 | | 3i(7-9i)= | | 2000*.025= | | 0.5d-12=24 | | 3(z+2)-(3z-1)= | | 3x+55=9x-107 | | 4*7.25+2(7.25+3.25)= | | 25x+.45=40x-.25 | | 13Y-8X-5X= | | .168=.5(9.8)t^2 | | 8+2n=7n+8 | | 2x+3=2x-1+4 | | -91+63= | | a=2000(1.025)24 | | 8(3+0.5x)-7=1.5(6-4x) | | 3(x-2)=3x+3 | | -5g=32 | | 25x^2+30x+9=9-6x+4x^2 | | -4n=-4 | | -2x-3-(3x-5)=-6x+(-2+6x-4) | | 2x+9x=21+7x | | 1n-5n+1n=-12-3 | | 115-(-20)= |

Equations solver categories