8t^2-t-5=

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Solution for 8t^2-t-5= equation:


Simplifying
8t2 + -1t + -5 = 0

Reorder the terms:
-5 + -1t + 8t2 = 0

Solving
-5 + -1t + 8t2 = 0

Solving for variable 't'.

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

Divide each side by '8'.
-0.625 + -0.125t + t2 = 0

Move the constant term to the right:

Add '0.625' to each side of the equation.
-0.625 + -0.125t + 0.625 + t2 = 0 + 0.625

Reorder the terms:
-0.625 + 0.625 + -0.125t + t2 = 0 + 0.625

Combine like terms: -0.625 + 0.625 = 0.000
0.000 + -0.125t + t2 = 0 + 0.625
-0.125t + t2 = 0 + 0.625

Combine like terms: 0 + 0.625 = 0.625
-0.125t + t2 = 0.625

The t term is -0.125t.  Take half its coefficient (-0.0625).
Square it (0.00390625) and add it to both sides.

Add '0.00390625' to each side of the equation.
-0.125t + 0.00390625 + t2 = 0.625 + 0.00390625

Reorder the terms:
0.00390625 + -0.125t + t2 = 0.625 + 0.00390625

Combine like terms: 0.625 + 0.00390625 = 0.62890625
0.00390625 + -0.125t + t2 = 0.62890625

Factor a perfect square on the left side:
(t + -0.0625)(t + -0.0625) = 0.62890625

Calculate the square root of the right side: 0.793036096

Break this problem into two subproblems by setting 
(t + -0.0625) equal to 0.793036096 and -0.793036096.

Subproblem 1

t + -0.0625 = 0.793036096 Simplifying t + -0.0625 = 0.793036096 Reorder the terms: -0.0625 + t = 0.793036096 Solving -0.0625 + t = 0.793036096 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.0625' to each side of the equation. -0.0625 + 0.0625 + t = 0.793036096 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + t = 0.793036096 + 0.0625 t = 0.793036096 + 0.0625 Combine like terms: 0.793036096 + 0.0625 = 0.855536096 t = 0.855536096 Simplifying t = 0.855536096

Subproblem 2

t + -0.0625 = -0.793036096 Simplifying t + -0.0625 = -0.793036096 Reorder the terms: -0.0625 + t = -0.793036096 Solving -0.0625 + t = -0.793036096 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.0625' to each side of the equation. -0.0625 + 0.0625 + t = -0.793036096 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + t = -0.793036096 + 0.0625 t = -0.793036096 + 0.0625 Combine like terms: -0.793036096 + 0.0625 = -0.730536096 t = -0.730536096 Simplifying t = -0.730536096

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.855536096, -0.730536096}

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