-s^2+6s+12=0

Simple and best practice solution for -s^2+6s+12=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+6s+12=0 equation:


Simplifying
-1s2 + 6s + 12 = 0

Reorder the terms:
12 + 6s + -1s2 = 0

Solving
12 + 6s + -1s2 = 0

Solving for variable 's'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-12 + -6s + s2 = 0

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + -6s + 12 + s2 = 0 + 12

Reorder the terms:
-12 + 12 + -6s + s2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -6s + s2 = 0 + 12
-6s + s2 = 0 + 12

Combine like terms: 0 + 12 = 12
-6s + s2 = 12

The s term is -6s.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6s + 9 + s2 = 12 + 9

Reorder the terms:
9 + -6s + s2 = 12 + 9

Combine like terms: 12 + 9 = 21
9 + -6s + s2 = 21

Factor a perfect square on the left side:
(s + -3)(s + -3) = 21

Calculate the square root of the right side: 4.582575695

Break this problem into two subproblems by setting 
(s + -3) equal to 4.582575695 and -4.582575695.

Subproblem 1

s + -3 = 4.582575695 Simplifying s + -3 = 4.582575695 Reorder the terms: -3 + s = 4.582575695 Solving -3 + s = 4.582575695 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + s = 4.582575695 + 3 Combine like terms: -3 + 3 = 0 0 + s = 4.582575695 + 3 s = 4.582575695 + 3 Combine like terms: 4.582575695 + 3 = 7.582575695 s = 7.582575695 Simplifying s = 7.582575695

Subproblem 2

s + -3 = -4.582575695 Simplifying s + -3 = -4.582575695 Reorder the terms: -3 + s = -4.582575695 Solving -3 + s = -4.582575695 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + s = -4.582575695 + 3 Combine like terms: -3 + 3 = 0 0 + s = -4.582575695 + 3 s = -4.582575695 + 3 Combine like terms: -4.582575695 + 3 = -1.582575695 s = -1.582575695 Simplifying s = -1.582575695

Solution

The solution to the problem is based on the solutions from the subproblems. s = {7.582575695, -1.582575695}

See similar equations:

| 5y-8+y+34=8y+30-6y | | N-15.00=30.00 | | 15x-10(-.2)=5 | | 2/5p=-8/7 | | 15y=-4+5(0.3333333333+0.6666666667y) | | -5.6r=-14 | | -4(7+9m)+6m= | | 4y-32x=8 | | 8N+N=459 | | x+(.25x)+(x-10)=89 | | 8N+N=459-N | | -8.7r=27.84 | | (12n^2-4+8)-(4n^2-1)= | | 7000000000*6000000= | | 3x^2-2mx+8=0 | | 5(3-1y)+6y=14 | | 4x-1=-5x-3(1) | | mg+hcl=mgcl^2+h^2 | | x-8(-10)=71 | | (5x+10)= | | 2.5=60/v | | 7y-8(8y+71)=2 | | 23=4.6t | | 7y-8x=2 | | x-8y=71 | | 12N-5N=98 | | (xD^2+D)y=0 | | N+5N+3=57 | | -5-(4)= | | 2(x-3)=62 | | 32=2l+14 | | 4w^2-33w-35=0 |

Equations solver categories