x^2-20=x

Simple and best practice solution for x^2-20=x 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^2-20=x equation:


Simplifying
x2 + -20 = x

Reorder the terms:
-20 + x2 = x

Solving
-20 + x2 = x

Solving for variable 'x'.

Reorder the terms:
-20 + -1x + x2 = x + -1x

Combine like terms: x + -1x = 0
-20 + -1x + x2 = 0

Factor a trinomial.
(-4 + -1x)(5 + -1x) = 0

Subproblem 1

Set the factor '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4

Subproblem 2

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {-4, 5}

See similar equations:

| 4s-1=8-25 | | 600=107x-213512 | | 6x=4.5 | | (5a^2+8a-9)+(a-4)+(15a^2-4a+9)= | | 5k+1-2=11 | | x^3-16x^2+60x=0 | | 2n+3n-n=44 | | 10=2x-2.5 | | 1/2(2n-5)=4n-1 | | 8r^2=32r | | I=107x-213512 | | 16n^2-9=0 | | (4x^3-4x^2+5x)+(4x^3+9x^2-12x)= | | 4n-n=60 | | 27x^2-75=0 | | 7-a/4.2=3.5 | | 5(4z-1)-4(z+1)=7(z+1) | | 45p^2-80=0 | | -8=x/3-5 | | w/4-9=-3 | | 2n+3n=30 | | f(0)=8x+7 | | 32n^2-2=0 | | 2n+3n= | | 25a^2+30a+9=0 | | (-3m^2n^3)(5m^5n^2)= | | 10x^3(x-2)-5(x-2)= | | 50=t(t-5) | | 20x+3y=37 | | 15x-3y=26 | | 142=11t^2+t+40 | | 11t^2+t= |

Equations solver categories