x(x+2)=20+x

Simple and best practice solution for x(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(x+2)=20+x equation:


Simplifying
x(x + 2) = 20 + x

Reorder the terms:
x(2 + x) = 20 + x
(2 * x + x * x) = 20 + x
(2x + x2) = 20 + x

Solving
2x + x2 = 20 + x

Solving for variable 'x'.

Reorder the terms:
-20 + 2x + -1x + x2 = 20 + x + -20 + -1x

Combine like terms: 2x + -1x = 1x
-20 + 1x + x2 = 20 + x + -20 + -1x

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

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

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

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

Subproblem 1

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

Subproblem 2

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

Solution

x = {-5, 4}

See similar equations:

| 0=35x-3(5+12x) | | .8x=2.56 | | y=-x^2+12x-11 | | 16x^2+4=16 | | 5x/8=25 | | 35x^5= | | x(x+10)=11 | | 15x=4x-22 | | 16-3t=31 | | (9x-5)(8x+6)=0 | | -2x=41/2 | | 3x/4=-18 | | 6(x+12)-50=34 | | 8x+3(7x-6)= | | x^2+36=-15 | | x-2y=-17 | | 5-4(x+1)=11 | | 3/4(m-8)=3 | | 7(8x+7)+3x= | | 4x-5y=-69 | | -6(x-4)=42 | | X/150=y | | 7+2=47 | | -3x^2+13x+30=0 | | 1/(x-4)=1+4/(x^2-4x) | | 3(x-1)+6x=7(x+1) | | (2x+3)(3x^2-x-6)= | | 5(-8n+5)-4n= | | -21=5-4x | | 3-6(1+n)= | | 2-5c=0 | | -3x+13x+30=0 |

Equations solver categories