s^2-7s-18=0

Simple and best practice solution for s^2-7s-18=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 s^2-7s-18=0 equation:


Simplifying
s2 + -7s + -18 = 0

Reorder the terms:
-18 + -7s + s2 = 0

Solving
-18 + -7s + s2 = 0

Solving for variable 's'.

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

Subproblem 1

Set the factor '(-2 + -1s)' equal to zero and attempt to solve: Simplifying -2 + -1s = 0 Solving -2 + -1s = 0 Move all terms containing s to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1s = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1s = 0 + 2 -1s = 0 + 2 Combine like terms: 0 + 2 = 2 -1s = 2 Divide each side by '-1'. s = -2 Simplifying s = -2

Subproblem 2

Set the factor '(9 + -1s)' equal to zero and attempt to solve: Simplifying 9 + -1s = 0 Solving 9 + -1s = 0 Move all terms containing s to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1s = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1s = 0 + -9 -1s = 0 + -9 Combine like terms: 0 + -9 = -9 -1s = -9 Divide each side by '-1'. s = 9 Simplifying s = 9

Solution

s = {-2, 9}

See similar equations:

| 2x+3y-z=-2 | | -2z=-6 | | 10(-9-1)=-2r-10 | | 7x^2-174x-9=0 | | Z=1 | | 5x-7y=-29 | | 40(v-5)=12(22v+2) | | math=cool | | 2x+5y+2z=6 | | A=-5+0.5c | | A/4+5+5/2 | | 1/2(4x+5)=3(x+8)+3 | | A-2b+c=-5 | | 50*3/50+17/2 | | 171/240= | | 5/33= | | 31/125= | | 17/24= | | x-1*2x^2-x-1= | | 5(2x-3)2-(5x-2)(4x+2)=0 | | Y+91/2=133/4 | | 30x^2+70x^5+60x^7= | | 3x+12=5x-22 | | x/-3+5=12 | | (x-1)(2x^2-x-1)= | | 2x+4=2x-8 | | y+9/1/2=13/3/4 | | y=(8-x)lnx | | 4a-16=a+15 | | 10x/10=(0.01)1/3 | | 5d-4-=4-d | | x^2-x/3-2/3=0 |

Equations solver categories