s^2-6s-8=0

Simple and best practice solution for s^2-6s-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 s^2-6s-8=0 equation:


Simplifying
s2 + -6s + -8 = 0

Reorder the terms:
-8 + -6s + s2 = 0

Solving
-8 + -6s + s2 = 0

Solving for variable 's'.

Begin completing the square.

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + -6s + 8 + s2 = 0 + 8

Reorder the terms:
-8 + 8 + -6s + s2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -6s + s2 = 0 + 8
-6s + s2 = 0 + 8

Combine like terms: 0 + 8 = 8
-6s + s2 = 8

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 = 8 + 9

Reorder the terms:
9 + -6s + s2 = 8 + 9

Combine like terms: 8 + 9 = 17
9 + -6s + s2 = 17

Factor a perfect square on the left side:
(s + -3)(s + -3) = 17

Calculate the square root of the right side: 4.123105626

Break this problem into two subproblems by setting 
(s + -3) equal to 4.123105626 and -4.123105626.

Subproblem 1

s + -3 = 4.123105626 Simplifying s + -3 = 4.123105626 Reorder the terms: -3 + s = 4.123105626 Solving -3 + s = 4.123105626 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 = 4.123105626 + 3 Combine like terms: -3 + 3 = 0 0 + s = 4.123105626 + 3 s = 4.123105626 + 3 Combine like terms: 4.123105626 + 3 = 7.123105626 s = 7.123105626 Simplifying s = 7.123105626

Subproblem 2

s + -3 = -4.123105626 Simplifying s + -3 = -4.123105626 Reorder the terms: -3 + s = -4.123105626 Solving -3 + s = -4.123105626 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 = -4.123105626 + 3 Combine like terms: -3 + 3 = 0 0 + s = -4.123105626 + 3 s = -4.123105626 + 3 Combine like terms: -4.123105626 + 3 = -1.123105626 s = -1.123105626 Simplifying s = -1.123105626

Solution

The solution to the problem is based on the solutions from the subproblems. s = {7.123105626, -1.123105626}

See similar equations:

| 3x^4-16x^3-18x^2-5=0 | | 15+(n+6)=9 | | -(x-27)+(x+6)=x-7 | | -.50p=15 | | .4y=84 | | 24-x=[6-(5-8)]-(5-7)3 | | 4(1+4n)+7= | | 8x-4=8x+3 | | 2x+7+x=4x-x+25 | | 6(x+9)-51= | | 12y(x+8)=12 | | 7x+2+3y=180 | | 4/3x+8=12 | | 13(x+8)=12 | | (p+6)=-5 | | 1x+3=-7 | | 7x-56=6x-54 | | X-4-17=180 | | 5y-4=2y+14 | | 3x-1+5x-7=180 | | 5x+7=333 | | .04(42)+.16x=.08(x+42) | | 6x-10-4x=180 | | 2a+4=4a-10-4 | | 5x-4-8x=180 | | (7-6i)(2-3i)=0 | | (a-7)=15 | | 3x^2+6x-105= | | 3(x+1)+3=5x-2(-5+x) | | A=rd | | 82+159= | | 2(2+4)=4(2d-7) |

Equations solver categories