t^2-6t-100=0

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Solution for t^2-6t-100=0 equation:


Simplifying
t2 + -6t + -100 = 0

Reorder the terms:
-100 + -6t + t2 = 0

Solving
-100 + -6t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '100' to each side of the equation.
-100 + -6t + 100 + t2 = 0 + 100

Reorder the terms:
-100 + 100 + -6t + t2 = 0 + 100

Combine like terms: -100 + 100 = 0
0 + -6t + t2 = 0 + 100
-6t + t2 = 0 + 100

Combine like terms: 0 + 100 = 100
-6t + t2 = 100

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 = 100 + 9

Reorder the terms:
9 + -6t + t2 = 100 + 9

Combine like terms: 100 + 9 = 109
9 + -6t + t2 = 109

Factor a perfect square on the left side:
(t + -3)(t + -3) = 109

Calculate the square root of the right side: 10.440306509

Break this problem into two subproblems by setting 
(t + -3) equal to 10.440306509 and -10.440306509.

Subproblem 1

t + -3 = 10.440306509 Simplifying t + -3 = 10.440306509 Reorder the terms: -3 + t = 10.440306509 Solving -3 + t = 10.440306509 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 = 10.440306509 + 3 Combine like terms: -3 + 3 = 0 0 + t = 10.440306509 + 3 t = 10.440306509 + 3 Combine like terms: 10.440306509 + 3 = 13.440306509 t = 13.440306509 Simplifying t = 13.440306509

Subproblem 2

t + -3 = -10.440306509 Simplifying t + -3 = -10.440306509 Reorder the terms: -3 + t = -10.440306509 Solving -3 + t = -10.440306509 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 = -10.440306509 + 3 Combine like terms: -3 + 3 = 0 0 + t = -10.440306509 + 3 t = -10.440306509 + 3 Combine like terms: -10.440306509 + 3 = -7.440306509 t = -7.440306509 Simplifying t = -7.440306509

Solution

The solution to the problem is based on the solutions from the subproblems. t = {13.440306509, -7.440306509}

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