3s^2+12s+8=0

Simple and best practice solution for 3s^2+12s+8=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 3s^2+12s+8=0 equation:


Simplifying
3s2 + 12s + 8 = 0

Reorder the terms:
8 + 12s + 3s2 = 0

Solving
8 + 12s + 3s2 = 0

Solving for variable 's'.

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

Divide each side by '3'.
2.666666667 + 4s + s2 = 0

Move the constant term to the right:

Add '-2.666666667' to each side of the equation.
2.666666667 + 4s + -2.666666667 + s2 = 0 + -2.666666667

Reorder the terms:
2.666666667 + -2.666666667 + 4s + s2 = 0 + -2.666666667

Combine like terms: 2.666666667 + -2.666666667 = 0.000000000
0.000000000 + 4s + s2 = 0 + -2.666666667
4s + s2 = 0 + -2.666666667

Combine like terms: 0 + -2.666666667 = -2.666666667
4s + s2 = -2.666666667

The s term is 4s.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4s + 4 + s2 = -2.666666667 + 4

Reorder the terms:
4 + 4s + s2 = -2.666666667 + 4

Combine like terms: -2.666666667 + 4 = 1.333333333
4 + 4s + s2 = 1.333333333

Factor a perfect square on the left side:
(s + 2)(s + 2) = 1.333333333

Calculate the square root of the right side: 1.154700538

Break this problem into two subproblems by setting 
(s + 2) equal to 1.154700538 and -1.154700538.

Subproblem 1

s + 2 = 1.154700538 Simplifying s + 2 = 1.154700538 Reorder the terms: 2 + s = 1.154700538 Solving 2 + s = 1.154700538 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + s = 1.154700538 + -2 Combine like terms: 2 + -2 = 0 0 + s = 1.154700538 + -2 s = 1.154700538 + -2 Combine like terms: 1.154700538 + -2 = -0.845299462 s = -0.845299462 Simplifying s = -0.845299462

Subproblem 2

s + 2 = -1.154700538 Simplifying s + 2 = -1.154700538 Reorder the terms: 2 + s = -1.154700538 Solving 2 + s = -1.154700538 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + s = -1.154700538 + -2 Combine like terms: 2 + -2 = 0 0 + s = -1.154700538 + -2 s = -1.154700538 + -2 Combine like terms: -1.154700538 + -2 = -3.154700538 s = -3.154700538 Simplifying s = -3.154700538

Solution

The solution to the problem is based on the solutions from the subproblems. s = {-0.845299462, -3.154700538}

See similar equations:

| rile*e+suck*s=2rile*e+suck*s | | -5(u-5)=7u+13 | | 5b+7+7b+4= | | 7(x+2)+2(x+2)=7x-7 | | 6x[7+5x]= | | 4x+y=950 | | k*2=35 | | -3x+20=50 | | 23.99x+1450.08-120.84x=675.28 | | j+20000000000000=2j-80000000000000000000000000000000000000000000000000000 | | 5x-4=14+x | | -8+4n=-8(1-5) | | f(x)=4x^2+3x-4 | | 5x-(5x-4)=4 | | 2(1)+(1)=3 | | 42(3)-9= | | 3x^2+2x=40 | | 2z+2i=(2+4i)(z-i) | | j+20000000000000=j-80000000000000000000000000000000000000000000000000000 | | -4w+24=-8(w-1) | | 9x+10=-5x^2+6 | | c*2=36 | | 3(x+2)+2x=7(x+1)+9 | | 5(2b-7)=8 | | 3x^2+2x=20 | | 9x-10=-5x^2+6 | | do+the+harlem+shake=black+ops+3 | | 59=-3r | | -4(x+6)=-9x+26 | | 106=8x | | f(x)=x^4+2x^3+x^2 | | Solveg-4=2g+6 |

Equations solver categories