3x^2-21x+36=

Simple and best practice solution for 3x^2-21x+36= 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 3x^2-21x+36= equation:


Simplifying
3x2 + -21x + 36 = 0

Reorder the terms:
36 + -21x + 3x2 = 0

Solving
36 + -21x + 3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(12 + -7x + x2) = 0

Factor a trinomial.
3((3 + -1x)(4 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

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 = {3, 4}

See similar equations:

| 8c=-64 | | 10x-4=-13 | | 12x+6=36 | | 7a+4b=-8 | | -9j=-45 | | 2n-6=8n+14 | | 9a+6=33 | | 84=-12a | | 2(x-1)+5(x+2)=57 | | 12x^2-8x+15x-10= | | 9(3d+9)= | | 49=-7(t+1) | | 278-2x=43x+18 | | -4X+3Y=3 | | 2(3b-1)=40 | | 7-7x=18-14x | | 4(8c+4)= | | x^3+5x+x^2+5= | | x-x=-15 | | -x+6y=35 | | x+(11+2x)=43 | | -95-8x=8x+17 | | 4a+2=10 | | 15a-3=-57 | | -95+8x=8x+17 | | 4x-4y=24 | | -3t+1.5=7.5 | | 4b=-10 | | y=-x+12 | | 3x+14=-82-9x | | x=8x-4 | | x+(x+11)=43 |

Equations solver categories