t^2+8t-6520=0

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Solution for t^2+8t-6520=0 equation:


Simplifying
t2 + 8t + -6520 = 0

Reorder the terms:
-6520 + 8t + t2 = 0

Solving
-6520 + 8t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '6520' to each side of the equation.
-6520 + 8t + 6520 + t2 = 0 + 6520

Reorder the terms:
-6520 + 6520 + 8t + t2 = 0 + 6520

Combine like terms: -6520 + 6520 = 0
0 + 8t + t2 = 0 + 6520
8t + t2 = 0 + 6520

Combine like terms: 0 + 6520 = 6520
8t + t2 = 6520

The t term is 8t.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8t + 16 + t2 = 6520 + 16

Reorder the terms:
16 + 8t + t2 = 6520 + 16

Combine like terms: 6520 + 16 = 6536
16 + 8t + t2 = 6536

Factor a perfect square on the left side:
(t + 4)(t + 4) = 6536

Calculate the square root of the right side: 80.845531726

Break this problem into two subproblems by setting 
(t + 4) equal to 80.845531726 and -80.845531726.

Subproblem 1

t + 4 = 80.845531726 Simplifying t + 4 = 80.845531726 Reorder the terms: 4 + t = 80.845531726 Solving 4 + t = 80.845531726 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + t = 80.845531726 + -4 Combine like terms: 4 + -4 = 0 0 + t = 80.845531726 + -4 t = 80.845531726 + -4 Combine like terms: 80.845531726 + -4 = 76.845531726 t = 76.845531726 Simplifying t = 76.845531726

Subproblem 2

t + 4 = -80.845531726 Simplifying t + 4 = -80.845531726 Reorder the terms: 4 + t = -80.845531726 Solving 4 + t = -80.845531726 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + t = -80.845531726 + -4 Combine like terms: 4 + -4 = 0 0 + t = -80.845531726 + -4 t = -80.845531726 + -4 Combine like terms: -80.845531726 + -4 = -84.845531726 t = -84.845531726 Simplifying t = -84.845531726

Solution

The solution to the problem is based on the solutions from the subproblems. t = {76.845531726, -84.845531726}

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