x^2-4x+8=20

Simple and best practice solution for x^2-4x+8=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 x^2-4x+8=20 equation:


Simplifying
x2 + -4x + 8 = 20

Reorder the terms:
8 + -4x + x2 = 20

Solving
8 + -4x + x2 = 20

Solving for variable 'x'.

Reorder the terms:
8 + -20 + -4x + x2 = 20 + -20

Combine like terms: 8 + -20 = -12
-12 + -4x + x2 = 20 + -20

Combine like terms: 20 + -20 = 0
-12 + -4x + x2 = 0

Factor a trinomial.
(-2 + -1x)(6 + -1x) = 0

Subproblem 1

Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2

Subproblem 2

Set the factor '(6 + -1x)' equal to zero and attempt to solve: Simplifying 6 + -1x = 0 Solving 6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x = 0 + -6 -1x = 0 + -6 Combine like terms: 0 + -6 = -6 -1x = -6 Divide each side by '-1'. x = 6 Simplifying x = 6

Solution

x = {-2, 6}

See similar equations:

| 4x/x+5-3/x-5 | | 2y=12+16y | | 7(y+10)+y=2(y+5)-8 | | 8/3=k/15 | | n+.07n=34 | | x-9=30 | | 8(2x-3)=-10(x+5) | | 1.9x+3.7=2.8(x-2)-5.1 | | 3z-2=16,3 | | 9-3(2x+8)+2(4-5x)=20-(5+2x) | | 7(x-4)=84 | | (8/3)=(h/15) | | 7(y+10)+y=(y+5)-8 | | 4z-3=5 | | 20x/16 | | 210/6 | | 88=x/4 | | 45-2y=25 | | 70=8X+6 | | 28=x/7 | | 2z-1=3z | | 9x-3x^3=0 | | 18+-23-29= | | 4(x+2)=6x-2 | | 4522*552/566(566+655) | | 5+2n=30 | | 9x(x+2)=40 | | 4(x^2+1)=17x | | 4-7t=2(t-7) | | -2/3+a+1/9 | | 4522*552/566 | | 0.5/12+12/0.5 |

Equations solver categories