5*x^4+15*x^2=4

Simple and best practice solution for 5*x^4+15*x^2=4 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 5*x^4+15*x^2=4 equation:


Simplifying
5x4 + 15x2 = 4

Reorder the terms:
15x2 + 5x4 = 4

Solving
15x2 + 5x4 = 4

Solving for variable 'x'.

Reorder the terms:
-4 + 15x2 + 5x4 = 4 + -4

Combine like terms: 4 + -4 = 0
-4 + 15x2 + 5x4 = 0

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

Divide each side by '5'.
-0.8 + 3x2 + x4 = 0

Move the constant term to the right:

Add '0.8' to each side of the equation.
-0.8 + 3x2 + 0.8 + x4 = 0 + 0.8

Reorder the terms:
-0.8 + 0.8 + 3x2 + x4 = 0 + 0.8

Combine like terms: -0.8 + 0.8 = 0.0
0.0 + 3x2 + x4 = 0 + 0.8
3x2 + x4 = 0 + 0.8

Combine like terms: 0 + 0.8 = 0.8
3x2 + x4 = 0.8

The x term is 3x2.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x2 + 2.25 + x4 = 0.8 + 2.25

Reorder the terms:
2.25 + 3x2 + x4 = 0.8 + 2.25

Combine like terms: 0.8 + 2.25 = 3.05
2.25 + 3x2 + x4 = 3.05

Factor a perfect square on the left side:
(x2 + 1.5)(x2 + 1.5) = 3.05

Calculate the square root of the right side: 1.74642492

Break this problem into two subproblems by setting 
(x2 + 1.5) equal to 1.74642492 and -1.74642492.

Subproblem 1

x2 + 1.5 = 1.74642492 Simplifying x2 + 1.5 = 1.74642492 Reorder the terms: 1.5 + x2 = 1.74642492 Solving 1.5 + x2 = 1.74642492 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x2 = 1.74642492 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x2 = 1.74642492 + -1.5 x2 = 1.74642492 + -1.5 Combine like terms: 1.74642492 + -1.5 = 0.24642492 x2 = 0.24642492 Simplifying x2 = 0.24642492 Take the square root of each side: x = {-0.496412047, 0.496412047}

Subproblem 2

x2 + 1.5 = -1.74642492 Simplifying x2 + 1.5 = -1.74642492 Reorder the terms: 1.5 + x2 = -1.74642492 Solving 1.5 + x2 = -1.74642492 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x2 = -1.74642492 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x2 = -1.74642492 + -1.5 x2 = -1.74642492 + -1.5 Combine like terms: -1.74642492 + -1.5 = -3.24642492 x2 = -3.24642492 Simplifying x2 = -3.24642492 Reorder the terms: 3.24642492 + x2 = -3.24642492 + 3.24642492 Combine like terms: -3.24642492 + 3.24642492 = 0.00000000 3.24642492 + 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:

| 12u-6-2u^2=0 | | -5x-15=-10 | | 4x-11=2x+39 | | x^3+x^2-6x-9= | | 6y+4=-11 | | -17y+-14y+14y+-7y+-3y+-19=8 | | 5(x-12)=9x+4 | | (3x-3)x^2-9= | | 0.5(x)=4.5 | | 31x-4=30x | | 0=250-0.5(20+0.4Q) | | 32x+2=33x-2 | | 1+9x=-7+x | | 2x^3+x^2-26x-40=0 | | (-10)-8x=(-110)+6x | | -3(s-2)=-18 | | 9x=11x-12 | | Y-y+y=8 | | 0=250-0.5p | | 3+91x=39x+19 | | 17=-3x+39 | | 6=3x+36 | | 5u+-7u+10u-7u+9=-6 | | 6x-1=125-8x | | 34x+3=102 | | 2x+1=x-(5) | | 9(x+4)=27 | | C=2X+10 | | 3+30x=15x+12 | | 4(3x-2)-5=4(x-3)+55 | | -26+2x=-39+5x | | 9(z-8)=18 |

Equations solver categories