s^2+5s=-18

Simple and best practice solution for s^2+5s=-18 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+5s=-18 equation:


Simplifying
s2 + 5s = -18

Reorder the terms:
5s + s2 = -18

Solving
5s + s2 = -18

Solving for variable 's'.

Reorder the terms:
18 + 5s + s2 = -18 + 18

Combine like terms: -18 + 18 = 0
18 + 5s + s2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-18' to each side of the equation.
18 + 5s + -18 + s2 = 0 + -18

Reorder the terms:
18 + -18 + 5s + s2 = 0 + -18

Combine like terms: 18 + -18 = 0
0 + 5s + s2 = 0 + -18
5s + s2 = 0 + -18

Combine like terms: 0 + -18 = -18
5s + s2 = -18

The s term is 5s.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5s + 6.25 + s2 = -18 + 6.25

Reorder the terms:
6.25 + 5s + s2 = -18 + 6.25

Combine like terms: -18 + 6.25 = -11.75
6.25 + 5s + s2 = -11.75

Factor a perfect square on the left side:
(s + 2.5)(s + 2.5) = -11.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 18305.5=x+(x*.0725) | | 36-x=-10x | | 4x-2x-2=6 | | (2x^2+5x)(25x^2-10-3)=125 | | X^5+2x^3-15x=0 | | 2g+5=15 | | n=-4m+9 | | x^3-6x^2-15x=0 | | xsquared-6x=27 | | -18-9d=7(8d+4) | | 2-y/12=15 | | y=2cos(3x)+3sin(3x) | | -25=-4+8(f+7) | | (5x)=(x+15) | | 2+5h=32 | | x^4+28x^2+75=0 | | 120=-16t^2+85t | | (x+5)=(2x-3) | | 5(-5)+-3=-23 | | 22=-5(6z-9) | | (2u^2)(7w^9u^2)(3w)=0 | | 5(c-3)=2x+6 | | (6x+10)=(7x+8) | | 5(-3)+-4=23 | | x=2x-5-(-3x-8) | | 2010x[20+4]= | | 5x-2x+2=14 | | x^3+y^3+z^3=27 | | m+5=2 | | (x+5)=(7x+3) | | 120-20*5+1= | | 5e^3x=30 |

Equations solver categories