3x^2-12x-135=

Simple and best practice solution for 3x^2-12x-135= 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^2-12x-135= equation:


Simplifying
3x2 + -12x + -135 = 0

Reorder the terms:
-135 + -12x + 3x2 = 0

Solving
-135 + -12x + 3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-45 + -4x + x2) = 0

Factor a trinomial.
3((-5 + -1x)(9 + -1x)) = 0

Ignore the factor 3.

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 '(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

Solution

x = {-5, 9}

See similar equations:

| 5x^2+9=78 | | 9=-6+b | | g(3)=x^2-8x+6 | | -0.5714(x)+22=-0.5714 | | f=1/6πr^2n= | | -0.5714(22)+22=y | | 1-6x=4-7x | | -2(3b+3)+(7b-9)=0 | | 10-.75x=7 | | 0.8571x-21=0.8571 | | -9.6=8.4(m-14) | | 0.8571(21)-21=y | | F=1/6πR^2n | | 4x+6x+2+7=6x+5+3x | | -84-7x=-364 | | 1.4x-1.3(1.4)=-6.3 | | 9s+20=16 | | (3x+2)(10x+1)=0 | | 7=6(1)+b | | 1.4(1.3)-1.3y=-6.3 | | 4x^2-12x=-4 | | 25x+83=-292 | | 0.4286x+14=14 | | 1.25(x+75)=273.75 | | 1.25(x+75)=250.00 | | 0.4286(0.4286)+14=y | | x/6-7=2 | | -85x+74=499 | | x+3.9(9.6)=9.6 | | 3.9+3.9y=9.6 | | -15=-5m/7 | | a/-3=-9 |

Equations solver categories