4x^4+3x^2+9=0

Simple and best practice solution for 4x^4+3x^2+9=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+9=0 equation:


Simplifying
4x4 + 3x2 + 9 = 0

Reorder the terms:
9 + 3x2 + 4x4 = 0

Solving
9 + 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'.
2.25 + 0.75x2 + x4 = 0

Move the constant term to the right:

Add '-2.25' to each side of the equation.
2.25 + 0.75x2 + -2.25 + x4 = 0 + -2.25

Reorder the terms:
2.25 + -2.25 + 0.75x2 + x4 = 0 + -2.25

Combine like terms: 2.25 + -2.25 = 0.00
0.00 + 0.75x2 + x4 = 0 + -2.25
0.75x2 + x4 = 0 + -2.25

Combine like terms: 0 + -2.25 = -2.25
0.75x2 + x4 = -2.25

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 = -2.25 + 0.140625

Reorder the terms:
0.140625 + 0.75x2 + x4 = -2.25 + 0.140625

Combine like terms: -2.25 + 0.140625 = -2.109375
0.140625 + 0.75x2 + x4 = -2.109375

Factor a perfect square on the left side:
(x2 + 0.375)(x2 + 0.375) = -2.109375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 15x=90+9x | | -4(z+3)+5=5z+11 | | 3=c/d | | 7x+7=5y+140 | | y+12x=4 | | w/12.8=8 | | 99=8-4x+13 | | 3w=-6.3 | | 10x+7-3x=74 | | 3.5=8-x | | 2(f-2)=-16 | | 10(s-10)=-195 | | 2w=8.4 | | k-4.1=-9.38 | | -(c-10)=0 | | -2y-10=-3y+4+8y | | 18x=22+10x | | (3x-7)(2x+4)=0 | | 27/64 | | 2w-4=-12 | | y=ln(6x+5) | | -12/5x-5 | | 12-x=6x | | 6-5e^3x=30 | | (-5w-8)(7w-8)=0 | | 4.50x=4x+30 | | -7-8(5n-5)= | | (7x^2-2x^3)=((x-6)(x+6))+2x^2 | | (8x+2)(5x-10)=0 | | 15x-8x+7=-24 | | 2cos^26x-1=0 | | 2h-5=0.5(2) |

Equations solver categories