3x^4-11x^2-16=0

Simple and best practice solution for 3x^4-11x^2-16=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 3x^4-11x^2-16=0 equation:


Simplifying
3x4 + -11x2 + -16 = 0

Reorder the terms:
-16 + -11x2 + 3x4 = 0

Solving
-16 + -11x2 + 3x4 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-5.333333333 + -3.666666667x2 + x4 = 0

Move the constant term to the right:

Add '5.333333333' to each side of the equation.
-5.333333333 + -3.666666667x2 + 5.333333333 + x4 = 0 + 5.333333333

Reorder the terms:
-5.333333333 + 5.333333333 + -3.666666667x2 + x4 = 0 + 5.333333333

Combine like terms: -5.333333333 + 5.333333333 = 0.000000000
0.000000000 + -3.666666667x2 + x4 = 0 + 5.333333333
-3.666666667x2 + x4 = 0 + 5.333333333

Combine like terms: 0 + 5.333333333 = 5.333333333
-3.666666667x2 + x4 = 5.333333333

The x term is -3.666666667x2.  Take half its coefficient (-1.833333334).
Square it (3.361111114) and add it to both sides.

Add '3.361111114' to each side of the equation.
-3.666666667x2 + 3.361111114 + x4 = 5.333333333 + 3.361111114

Reorder the terms:
3.361111114 + -3.666666667x2 + x4 = 5.333333333 + 3.361111114

Combine like terms: 5.333333333 + 3.361111114 = 8.694444447
3.361111114 + -3.666666667x2 + x4 = 8.694444447

Factor a perfect square on the left side:
(x2 + -1.833333334)(x2 + -1.833333334) = 8.694444447

Calculate the square root of the right side: 2.948634336

Break this problem into two subproblems by setting 
(x2 + -1.833333334) equal to 2.948634336 and -2.948634336.

Subproblem 1

x2 + -1.833333334 = 2.948634336 Simplifying x2 + -1.833333334 = 2.948634336 Reorder the terms: -1.833333334 + x2 = 2.948634336 Solving -1.833333334 + x2 = 2.948634336 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x2 = 2.948634336 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x2 = 2.948634336 + 1.833333334 x2 = 2.948634336 + 1.833333334 Combine like terms: 2.948634336 + 1.833333334 = 4.78196767 x2 = 4.78196767 Simplifying x2 = 4.78196767 Take the square root of each side: x = {-2.18677106, 2.18677106}

Subproblem 2

x2 + -1.833333334 = -2.948634336 Simplifying x2 + -1.833333334 = -2.948634336 Reorder the terms: -1.833333334 + x2 = -2.948634336 Solving -1.833333334 + x2 = -2.948634336 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x2 = -2.948634336 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x2 = -2.948634336 + 1.833333334 x2 = -2.948634336 + 1.833333334 Combine like terms: -2.948634336 + 1.833333334 = -1.115301002 x2 = -1.115301002 Simplifying x2 = -1.115301002 Reorder the terms: 1.115301002 + x2 = -1.115301002 + 1.115301002 Combine like terms: -1.115301002 + 1.115301002 = 0.000000000 1.115301002 + x2 = 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:

| 4p-50=110 | | (x^2)-16x+58=0 | | 16x+14y-8+4w= | | 32-4b=-12 | | 5x-3y=35 | | 4(x-5)=2-2(1-3x) | | -3x+6(1x+x)=2(-6+3x) | | x=0+50*1-80-33*0+30 | | 5(4X+3)=83 | | 0.33c=3c-9 | | -3n+21=-3n | | 3z^4-15z^3-9z^2=0 | | 15x^2+31x+2=0 | | 0+50*1-60-60*0+10=x | | 3q+27=-5q+2 | | -6x^7+10x^5-8x^3= | | -7x-16x=-92 | | 6-3x=6x-3 | | 0.66c=3c-9 | | 0.01x-7=14 | | -8x-4x=12 | | 3x-11x=-152 | | 2f-15.75=60.25 | | 3x-4x=-18 | | 125x-143x=-144 | | 17=0.05*x | | R^2-cr-c^2=0 | | -2.3c-6.6=-12.2-3.9c | | r^2+13r+42=0 | | 10x^2-5xy-y=0 | | 3x+6=-24 | | -2a=12-4a |

Equations solver categories