x^2+9x=-8

Simple and best practice solution for x^2+9x=-8 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^2+9x=-8 equation:


Simplifying
x2 + 9x = -8

Reorder the terms:
9x + x2 = -8

Solving
9x + x2 = -8

Solving for variable 'x'.

Reorder the terms:
8 + 9x + x2 = -8 + 8

Combine like terms: -8 + 8 = 0
8 + 9x + x2 = 0

Factor a trinomial.
(8 + x)(1 + x) = 0

Subproblem 1

Set the factor '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8

Subproblem 2

Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 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 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1

Solution

x = {-8, -1}

See similar equations:

| 9+z^2-169=x^2+4 | | -4(n+3)=24 | | 7x-5=3x+11 | | 9x-13x+7=31 | | x^2-12x=-36 | | 12+v=-6 | | 7t-6r=-4-3r | | 4a+9=7a-5 | | -(5x+1)=1-5x | | x^2-x=14 | | 12x^2-36x+15=0 | | 7.25= | | 13-3x=3x | | 6x^2+6x+1=0 | | 5x^2=11x-2 | | 3(5+2x)=6x+15 | | y+8=-4(-3) | | 3(x-1.2)=9.3 | | 0.333= | | 12y^2-8y-15=0 | | 3x+1-(x-5)=2x-4 | | 0.33= | | 2=4+n | | x^3=2x^4 | | 4x-6=90 | | -13n=13 | | 5*6-2(6+3)= | | 3(x-8)-5=9(x+2)+1 | | 8x+6y=17 | | x^2-8x+25=0 | | x^2-8x-25=0 | | 2(5+2x)=6x-10 |

Equations solver categories