(3x-6)(x+9)=0

Simple and best practice solution for (3x-6)(x+9)=0 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-6)(x+9)=0 equation:


Simplifying
(3x + -6)(x + 9) = 0

Reorder the terms:
(-6 + 3x)(x + 9) = 0

Reorder the terms:
(-6 + 3x)(9 + x) = 0

Multiply (-6 + 3x) * (9 + x)
(-6(9 + x) + 3x * (9 + x)) = 0
((9 * -6 + x * -6) + 3x * (9 + x)) = 0
((-54 + -6x) + 3x * (9 + x)) = 0
(-54 + -6x + (9 * 3x + x * 3x)) = 0
(-54 + -6x + (27x + 3x2)) = 0

Combine like terms: -6x + 27x = 21x
(-54 + 21x + 3x2) = 0

Solving
-54 + 21x + 3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-18 + 7x + x2) = 0

Factor a trinomial.
3((-9 + -1x)(2 + -1x)) = 0

Ignore the factor 3.

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 '(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

Solution

x = {-9, 2}

See similar equations:

| 18x^3-9x^2-27x=0 | | 6x^2+18x-11=0 | | 12-p=32 | | 6x+10=x^2+3x | | 2lne^3=4 | | 15+.75+8=45 | | 3.6x=-6.4 | | 45c+10= | | x^2-10x-400=0 | | 5x+3+4x=3(3x-2) | | 6y=4x+36.25 | | x/455=120/100 | | 16+17k^2+4k= | | 39+19b=100 | | 2n=5/25 | | x-(0.1x)=300 | | (3r+5)/2=13 | | 2y+3x=130 | | n^2+25n+66=0 | | 9x-31=12x+11 | | 5/13r=45/32 | | 12-4/5(-5+15)=4 | | 9(x-3)+7=52 | | 1.8c+32=40 | | -10-20x+35x-14=3x+9x | | 10-6x=30-104 | | b^2+6b+72=72 | | -1/2v=-9/10 | | 2/3r=0 | | 25x^2+4(0)=9 | | 3t-4fort=8 | | 1/2m=6t |

Equations solver categories