s^2+5s=-15

Simple and best practice solution for s^2+5s=-15 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=-15 equation:


Simplifying
s2 + 5s = -15

Reorder the terms:
5s + s2 = -15

Solving
5s + s2 = -15

Solving for variable 's'.

Reorder the terms:
15 + 5s + s2 = -15 + 15

Combine like terms: -15 + 15 = 0
15 + 5s + s2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-15' to each side of the equation.
15 + 5s + -15 + s2 = 0 + -15

Reorder the terms:
15 + -15 + 5s + s2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 5s + s2 = 0 + -15
5s + s2 = 0 + -15

Combine like terms: 0 + -15 = -15
5s + s2 = -15

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 = -15 + 6.25

Reorder the terms:
6.25 + 5s + s2 = -15 + 6.25

Combine like terms: -15 + 6.25 = -8.75
6.25 + 5s + s2 = -8.75

Factor a perfect square on the left side:
(s + 2.5)(s + 2.5) = -8.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| x=4+6-4 | | 6a+18=4a-4 | | 2x+42-3x=2-8x+5 | | 5(x+1)=2(x+4) | | 2w+2h+3L=P | | x^2-mx-8=0 | | 3097.50=3000(1+0.5r) | | y+4=-5(x+1) | | 4n+14=78 | | 4p+2q=1 | | y-7=5(x-8) | | 1/17a=0 | | 5x-1x=28 | | 3e-5=14 | | 3=-3+36 | | 2x^2-14x-24=0 | | 2F+5G=13.2 | | 18-11x=73 | | -2x-1.5(4-x)=20-3x | | 15-5x=14x-14 | | 4z+8=3 | | 3x-8=(-x)-8 | | (8x-1)+(7x+9)= | | 6x-9=-21 | | 7x^6+30x^4+2=0 | | -2-4=-2(X+3) | | 6(x-4)=3(2x+5)+9 | | -4x+5=-x-6-3x | | -0.9x=0.6 | | 12y=64 | | R^2+194.9=0 | | -2(a+6)=-2a-12 |

Equations solver categories