x^2-21x+108=

Simple and best practice solution for x^2-21x+108= 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^2-21x+108= equation:


Simplifying
x2 + -21x + 108 = 0

Reorder the terms:
108 + -21x + x2 = 0

Solving
108 + -21x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(9 + -1x)(12 + -1x) = 0

Subproblem 1

Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Subproblem 2

Set the factor '(12 + -1x)' equal to zero and attempt to solve: Simplifying 12 + -1x = 0 Solving 12 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + -1x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -1x = 0 + -12 -1x = 0 + -12 Combine like terms: 0 + -12 = -12 -1x = -12 Divide each side by '-1'. x = 12 Simplifying x = 12

Solution

x = {9, 12}

See similar equations:

| 5n^2+19n-68=-2 | | 10x^2-69x+100=-19 | | x^2-25x+144= | | 0=2x^2+16x-34 | | 91=1000.c | | 3m(4+m)= | | 36y^2-36=0 | | 48x+8+3x-6=90 | | 91=100.c.10 | | 15-x=2+1+x+x | | 10x^2+55x=-75 | | x^2-21x-72= | | x^2+108x=0 | | 3x(2x+3)-5x=0 | | 2n/3=18 | | 41x+14=5(7x+4)+6x-6 | | 4w^3-12w^2+8w= | | -15+10-3=-6+8-4 | | 8=-.4c | | (x+5)+y=-1 | | 12x^2+23x-9=0 | | x(2-a)= | | 18x-16=2(7x-5)+4x-6 | | 2(3x-4)-x=3x-24 | | 52=-9+16y-19 | | -31+-14.5= | | 24x^2-2x=15 | | 12(0.666666666667)= | | 9r^3+45r^2=54r | | 120.666666666667= | | -31-14.5= | | 5(2x-6)=3(2x+5) |

Equations solver categories