3x^4+5x^2=13

Simple and best practice solution for 3x^4+5x^2=13 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 3x^4+5x^2=13 equation:


Simplifying
3x4 + 5x2 = 13

Reorder the terms:
5x2 + 3x4 = 13

Solving
5x2 + 3x4 = 13

Solving for variable 'x'.

Reorder the terms:
-13 + 5x2 + 3x4 = 13 + -13

Combine like terms: 13 + -13 = 0
-13 + 5x2 + 3x4 = 0

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

Divide each side by '3'.
-4.333333333 + 1.666666667x2 + x4 = 0

Move the constant term to the right:

Add '4.333333333' to each side of the equation.
-4.333333333 + 1.666666667x2 + 4.333333333 + x4 = 0 + 4.333333333

Reorder the terms:
-4.333333333 + 4.333333333 + 1.666666667x2 + x4 = 0 + 4.333333333

Combine like terms: -4.333333333 + 4.333333333 = 0.000000000
0.000000000 + 1.666666667x2 + x4 = 0 + 4.333333333
1.666666667x2 + x4 = 0 + 4.333333333

Combine like terms: 0 + 4.333333333 = 4.333333333
1.666666667x2 + x4 = 4.333333333

The x term is 1.666666667x2.  Take half its coefficient (0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
1.666666667x2 + 0.6944444447 + x4 = 4.333333333 + 0.6944444447

Reorder the terms:
0.6944444447 + 1.666666667x2 + x4 = 4.333333333 + 0.6944444447

Combine like terms: 4.333333333 + 0.6944444447 = 5.0277777777
0.6944444447 + 1.666666667x2 + x4 = 5.0277777777

Factor a perfect square on the left side:
(x2 + 0.8333333335)(x2 + 0.8333333335) = 5.0277777777

Calculate the square root of the right side: 2.242270674

Break this problem into two subproblems by setting 
(x2 + 0.8333333335) equal to 2.242270674 and -2.242270674.

Subproblem 1

x2 + 0.8333333335 = 2.242270674 Simplifying x2 + 0.8333333335 = 2.242270674 Reorder the terms: 0.8333333335 + x2 = 2.242270674 Solving 0.8333333335 + x2 = 2.242270674 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8333333335' to each side of the equation. 0.8333333335 + -0.8333333335 + x2 = 2.242270674 + -0.8333333335 Combine like terms: 0.8333333335 + -0.8333333335 = 0.0000000000 0.0000000000 + x2 = 2.242270674 + -0.8333333335 x2 = 2.242270674 + -0.8333333335 Combine like terms: 2.242270674 + -0.8333333335 = 1.4089373405 x2 = 1.4089373405 Simplifying x2 = 1.4089373405 Take the square root of each side: x = {-1.186986664, 1.186986664}

Subproblem 2

x2 + 0.8333333335 = -2.242270674 Simplifying x2 + 0.8333333335 = -2.242270674 Reorder the terms: 0.8333333335 + x2 = -2.242270674 Solving 0.8333333335 + x2 = -2.242270674 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8333333335' to each side of the equation. 0.8333333335 + -0.8333333335 + x2 = -2.242270674 + -0.8333333335 Combine like terms: 0.8333333335 + -0.8333333335 = 0.0000000000 0.0000000000 + x2 = -2.242270674 + -0.8333333335 x2 = -2.242270674 + -0.8333333335 Combine like terms: -2.242270674 + -0.8333333335 = -3.0756040075 x2 = -3.0756040075 Simplifying x2 = -3.0756040075 Reorder the terms: 3.0756040075 + x2 = -3.0756040075 + 3.0756040075 Combine like terms: -3.0756040075 + 3.0756040075 = 0.0000000000 3.0756040075 + x2 = 0.0000000000 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:

| 9m-16=14+3m | | 2w*l-5=272 | | 7(2n-4)=(2n+8)+1 | | 5x-4=3(x+1)+2x-7 | | 7=5+w | | 0.7x-5.2=0.4 | | 6-9(-y+4)=6(8y-1)+3 | | 5y+2(y-7)=3(y+2)-5 | | -3(t-5)+5t=6t-6 | | 3(2x-2)-5=6x-11 | | 6x+7=6(x-6) | | 8(n+8)=2(32+4n) | | 6x+24=8x-16 | | 9z-[7z-(18z+3)]=0 | | x+y=18 | | x^2-8x+64=0 | | 0.80x+0.20(140)=0.40(118) | | s^2-6s=16 | | 0.30x+0.15(130)=0.5(30) | | 6(3t-4)+10=5(r-2)-(3t+4) | | x^2+36x+29=0 | | 35x+36(1-x)=33 | | 13k+4.5=k+17 | | 25x^2-12x=0 | | 7x+2=-2+5x+12 | | (37b-4)-9(4b+4)=-2 | | -9(x+9)+5=-76 | | 6(3t-4)+10=5(r-2)-(3+4) | | (37b-4)-9(4b+4)=2 | | -2(2x-5)=2x | | -5y+7=-4(2y+5) | | 24x-3y=-4y |

Equations solver categories