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

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


Simplifying
4x4 + -3x2 + -2 = 0

Reorder the terms:
-2 + -3x2 + 4x4 = 0

Solving
-2 + -3x2 + 4x4 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
-0.5 + -0.75x2 + x4 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + -0.75x2 + 0.5 + x4 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + -0.75x2 + x4 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + -0.75x2 + x4 = 0 + 0.5
-0.75x2 + x4 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
-0.75x2 + x4 = 0.5

The x term is -0.75x2.  Take half its coefficient (-0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
-0.75x2 + 0.140625 + x4 = 0.5 + 0.140625

Reorder the terms:
0.140625 + -0.75x2 + x4 = 0.5 + 0.140625

Combine like terms: 0.5 + 0.140625 = 0.640625
0.140625 + -0.75x2 + x4 = 0.640625

Factor a perfect square on the left side:
(x2 + -0.375)(x2 + -0.375) = 0.640625

Calculate the square root of the right side: 0.80039053

Break this problem into two subproblems by setting 
(x2 + -0.375) equal to 0.80039053 and -0.80039053.

Subproblem 1

x2 + -0.375 = 0.80039053 Simplifying x2 + -0.375 = 0.80039053 Reorder the terms: -0.375 + x2 = 0.80039053 Solving -0.375 + x2 = 0.80039053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x2 = 0.80039053 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x2 = 0.80039053 + 0.375 x2 = 0.80039053 + 0.375 Combine like terms: 0.80039053 + 0.375 = 1.17539053 x2 = 1.17539053 Simplifying x2 = 1.17539053 Take the square root of each side: x = {-1.084154293, 1.084154293}

Subproblem 2

x2 + -0.375 = -0.80039053 Simplifying x2 + -0.375 = -0.80039053 Reorder the terms: -0.375 + x2 = -0.80039053 Solving -0.375 + x2 = -0.80039053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x2 = -0.80039053 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x2 = -0.80039053 + 0.375 x2 = -0.80039053 + 0.375 Combine like terms: -0.80039053 + 0.375 = -0.42539053 x2 = -0.42539053 Simplifying x2 = -0.42539053 Reorder the terms: 0.42539053 + x2 = -0.42539053 + 0.42539053 Combine like terms: -0.42539053 + 0.42539053 = 0.00000000 0.42539053 + x2 = 0.00000000 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:

| 4x+5=4x+4 | | 5x+10x+60+100x= | | 5x+10(6)+25(4x)= | | y+7+y+4=9 | | h=6+40t-16t^2 | | 2x+1=3x+12 | | sqrt(y+7)+sqrt(y+4)=3 | | -11x+4=-11x+4 | | 6z+12-z-4= | | 5/4+x=3/7 | | 3ln(x)+ln(5)=7 | | 5/4+6=x | | x/13=34 | | 9k-3k=18 | | =5b^2-36b+7 | | 3(x+4)+5=5 | | 3+8x+11= | | (4x^2-15x+11)/x+2 | | 18-5/3x=3 | | 250/800=5/x | | 3u+6=27 | | 6x+5-3x=26 | | 2.9(5)=6.1(5)+k | | 9=2v-3 | | 1.4(2)=5.9(2)+k | | 26+5x-12=4 | | x+x+1-(1+5+0)=11 | | 1.4(2)=5.9(2) | | 1.4x+3=5.9x-6 | | 1.4=5.9x+k | | 1+5+0-(x+x+1)=11 | | 2(x/3)=6x+2 |

Equations solver categories