0=x^2+x-20

Simple and best practice solution for 0=x^2+x-20 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 0=x^2+x-20 equation:


Simplifying
0 = x2 + x + -20

Reorder the terms:
0 = -20 + x + x2

Solving
0 = -20 + x + x2

Solving for variable 'x'.

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

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

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

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

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

Factor a trinomial.
(4 + -1x)(5 + x) = 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 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 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 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5

Solution

x = {4, -5}

See similar equations:

| 7+9*(3+8)= | | n-11=3 | | 5y+29=y+25 | | 3x+4x=8x-10 | | 12=k-7 | | 6x-5=4x+17 | | f-32*0.55=4 | | 9=w+2 | | 0=x^2-2x-8 | | 8(c-2)=7(4+c) | | 15=r-7 | | 2y-1=4y-5 | | m-4=10 | | 3t-15=2t+10 | | 110-32*0.55=c | | f-2=4 | | 19-4x=-1 | | c+3=9 | | y=x^2-2x-8 | | -5y-1=-4y-7 | | 2=h-8 | | p-7=8 | | y+5=14 | | 2x+5=57 | | 8-5(12x+8)= | | 3x=6-2y | | 2c+2+5c= | | 6x=70 | | 4x^4-4x^2+1=0 | | xy+(y)(y)=-5 | | m/5+4=18 | | x-2y=-3 |

Equations solver categories