X^3-2x+21=0

Simple and best practice solution for X^3-2x+21=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 X^3-2x+21=0 equation:


Simplifying
X3 + -2x + 21 = 0

Reorder the terms:
21 + X3 + -2x = 0

Solving
21 + X3 + -2x = 0

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '-21' to each side of the equation.
21 + X3 + -21 + -2x = 0 + -21

Reorder the terms:
21 + -21 + X3 + -2x = 0 + -21

Combine like terms: 21 + -21 = 0
0 + X3 + -2x = 0 + -21
X3 + -2x = 0 + -21

Combine like terms: 0 + -21 = -21
X3 + -2x = -21

Add '2x' to each side of the equation.
X3 + -2x + 2x = -21 + 2x

Combine like terms: -2x + 2x = 0
X3 + 0 = -21 + 2x
X3 = -21 + 2x

Simplifying
X3 = -21 + 2x

Reorder the terms:
21 + X3 + -2x = -21 + 2x + 21 + -2x

Reorder the terms:
21 + X3 + -2x = -21 + 21 + 2x + -2x

Combine like terms: -21 + 21 = 0
21 + X3 + -2x = 0 + 2x + -2x
21 + X3 + -2x = 2x + -2x

Combine like terms: 2x + -2x = 0
21 + X3 + -2x = 0

The solution to this equation could not be determined.

See similar equations:

| 20+-10c=100 | | 2b+a=5 | | 2,711/9= | | 0.9=0.8+x-0.8x | | (-4x)(-2x^2)= | | x-21=2x+3 | | (w-3)(w^2+8w+1)= | | 7(x+6)=8(x-4) | | t^2+48t=0 | | (4x)=26 | | 7n^7+9n+5= | | 10.4+4= | | -x^2-12-18=0 | | 10/x=25/20 | | 9(s+10)+7=3s-11 | | f(x)=-2-2x | | rainbow+7=fun | | (n+1)(n^2+4n+5)= | | 2y+4=3-4+5y | | 16x-5+91=180 | | -28=6(2c-7) | | 100+8x+8=180 | | 5k^2+10=90 | | 4x+14=-58 | | p/4plus13=21 | | 2y+-8x=0 | | 2y=5(3+y) | | 55+x+127=180 | | 9(p+10)+5=4p-5 | | 2.8(302.75+-0.3571428571y)+y=847.70 | | 2+2=21 | | 112+11x+13=180 |

Equations solver categories