x[x+9]=x^2+15x+12

Simple and best practice solution for x[x+9]=x^2+15x+12 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[x+9]=x^2+15x+12 equation: 


Simplifying
x[x + 9] = x2 + 15x + 12

Reorder the terms:
x[9 + x] = x2 + 15x + 12
[9 * x + x * x] = x2 + 15x + 12
[9x + x2] = x2 + 15x + 12

Reorder the terms:
9x + x2 = 12 + 15x + x2

Add '-1x2' to each side of the equation.
9x + x2 + -1x2 = 12 + 15x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
9x + 0 = 12 + 15x + x2 + -1x2
9x = 12 + 15x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
9x = 12 + 15x + 0
9x = 12 + 15x

Solving
9x = 12 + 15x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-15x' to each side of the equation.
9x + -15x = 12 + 15x + -15x

Combine like terms: 9x + -15x = -6x
-6x = 12 + 15x + -15x

Combine like terms: 15x + -15x = 0
-6x = 12 + 0
-6x = 12

Divide each side by '-6'.
x = -2

Simplifying
x = -2

See similar equations:

| 502-408= | | 3-5xy= | | 20y^2-y-1=0 | | 12y-4y+11=5y+13 | | .5(r+6.5)=f | | X(3x-2)+x(2x-3)=(5x+5)(x-3) | | 3x^2-x-90=0 | | 3n+1-2n=n-2 | | 23y+3=29 | | 3x+x-6=94 | | 13k=-195 | | 45t=-16t+33t+45 | | -5+4x-2=37 | | 20x^3+23x=0 | | -x+6=-4x-24 | | X-84=19.7 | | 10p(-5)(-7p)= | | d+2.7=-3.7 | | 4s+12=-5s+51 | | 3c+17forc=5 | | 3x-5xy=-3xy | | 22x+12=15x+54 | | 13=15+w | | -8+3x=x-16 | | -3y+5-8=33 | | 4x-49=7x+12 | | R-42=7 | | 11a-4=2a+77 | | 16x^4-9=0 | | 10000000000029389493y-.00000000000003y+1094-23=111110234y+45y-34 | | 45-6y= | | 5.225+3.001x=10.275 |

Equations solver categories