t^2-6t-8=0

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


Simplifying
t2 + -6t + -8 = 0

Reorder the terms:
-8 + -6t + t2 = 0

Solving
-8 + -6t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + -6t + 8 + t2 = 0 + 8

Reorder the terms:
-8 + 8 + -6t + t2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -6t + t2 = 0 + 8
-6t + t2 = 0 + 8

Combine like terms: 0 + 8 = 8
-6t + t2 = 8

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

Add '9' to each side of the equation.
-6t + 9 + t2 = 8 + 9

Reorder the terms:
9 + -6t + t2 = 8 + 9

Combine like terms: 8 + 9 = 17
9 + -6t + t2 = 17

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

Calculate the square root of the right side: 4.123105626

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

Subproblem 1

t + -3 = 4.123105626 Simplifying t + -3 = 4.123105626 Reorder the terms: -3 + t = 4.123105626 Solving -3 + t = 4.123105626 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + t = 4.123105626 + 3 Combine like terms: -3 + 3 = 0 0 + t = 4.123105626 + 3 t = 4.123105626 + 3 Combine like terms: 4.123105626 + 3 = 7.123105626 t = 7.123105626 Simplifying t = 7.123105626

Subproblem 2

t + -3 = -4.123105626 Simplifying t + -3 = -4.123105626 Reorder the terms: -3 + t = -4.123105626 Solving -3 + t = -4.123105626 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + t = -4.123105626 + 3 Combine like terms: -3 + 3 = 0 0 + t = -4.123105626 + 3 t = -4.123105626 + 3 Combine like terms: -4.123105626 + 3 = -1.123105626 t = -1.123105626 Simplifying t = -1.123105626

Solution

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

See similar equations:

| 48/144=14/x | | 17x-23=5x-13 | | 140-5x=4x-23 | | Y=a+b+c/2 | | 3y=9x-15 | | 3a+24=8a+24 | | 0.6(x-5)+0.8(x-6)=0.2x-1.8 | | 39-11=4(x-6) | | 16+b=23 | | 2(2x-7)=5x-21-x | | 7m-6=8+7m | | 1.2+0.25x=2.4 | | 58/84 | | 1.2+0.35x=2.4 | | x+20=26 | | .3(x+10)=1.8x | | 2/4+4/3 | | m+6=3m | | 6x+5-x=4x+7 | | a(3b)=132 | | 2x/3+3/2=17/6 | | 2m+2m-12=0 | | 4/(x-2)=1+6/(x+2) | | z+0=2 | | y+21=22 | | 3/2w-5/2=-1/5-2 | | -29-3x=11-4x | | -20+(240-6x)=160 | | -15+f=-9 | | y+19=24 | | 7w-2/5=-1/5w-1/3 | | 3c-7+2c=23 |

Equations solver categories