9x^2-18x=27

Simple and best practice solution for 9x^2-18x=27 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 9x^2-18x=27 equation:


Simplifying
9x2 + -18x = 27

Reorder the terms:
-18x + 9x2 = 27

Solving
-18x + 9x2 = 27

Solving for variable 'x'.

Reorder the terms:
-27 + -18x + 9x2 = 27 + -27

Combine like terms: 27 + -27 = 0
-27 + -18x + 9x2 = 0

Factor out the Greatest Common Factor (GCF), '9'.
9(-3 + -2x + x2) = 0

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

Ignore the factor 9.

Subproblem 1

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

Subproblem 2

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

Solution

x = {-1, 3}

See similar equations:

| 4x+13=22+7x | | 2x^2+84=-26x | | 9k+5=17+3k | | -18k-6=6+18k-18k | | 9+8m=3m+13 | | 7k-8+2(k+12)=53 | | 20x+114=46x^2 | | (3x-7)(8+5)=2(7+6x) | | 13a+14b+15c+16d=1000 | | -5-10=-10 | | 4x+3x-2x= | | 3(3c-4)=10 | | (2x+3)2-x=27 | | 8x^2-18=o | | x^2+70x-400=0 | | -7p-16=4n | | x+(0.06x)=4271.18 | | 5xt+2-6x-10=x+520 | | -24+-6c+4+2c=10c-5 | | 345=20x+25 | | 4x+x-2x+3=24 | | x^2+18x-39=0 | | x^2+55x-300=0 | | 5n+8=-28 | | 3x+12+2x+3=45 | | 2x+6+4x-8=-20 | | 2y=5-3x | | -7=2n+5 | | x^3+x=15 | | 2A=h(a+b) | | x+2x+3x=120 | | f(x)=8x+6 |

Equations solver categories