8t^2+t-3=0

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Solution for 8t^2+t-3=0 equation:


Simplifying
8t2 + t + -3 = 0

Reorder the terms:
-3 + t + 8t2 = 0

Solving
-3 + t + 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'.
-0.375 + 0.125t + t2 = 0

Move the constant term to the right:

Add '0.375' to each side of the equation.
-0.375 + 0.125t + 0.375 + t2 = 0 + 0.375

Reorder the terms:
-0.375 + 0.375 + 0.125t + t2 = 0 + 0.375

Combine like terms: -0.375 + 0.375 = 0.000
0.000 + 0.125t + t2 = 0 + 0.375
0.125t + t2 = 0 + 0.375

Combine like terms: 0 + 0.375 = 0.375
0.125t + t2 = 0.375

The t term is t.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.125t + 0.25 + t2 = 0.375 + 0.25

Reorder the terms:
0.25 + 0.125t + t2 = 0.375 + 0.25

Combine like terms: 0.375 + 0.25 = 0.625
0.25 + 0.125t + t2 = 0.625

Factor a perfect square on the left side:
(t + 0.5)(t + 0.5) = 0.625

Calculate the square root of the right side: 0.790569415

Break this problem into two subproblems by setting 
(t + 0.5) equal to 0.790569415 and -0.790569415.

Subproblem 1

t + 0.5 = 0.790569415 Simplifying t + 0.5 = 0.790569415 Reorder the terms: 0.5 + t = 0.790569415 Solving 0.5 + t = 0.790569415 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = 0.790569415 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = 0.790569415 + -0.5 t = 0.790569415 + -0.5 Combine like terms: 0.790569415 + -0.5 = 0.290569415 t = 0.290569415 Simplifying t = 0.290569415

Subproblem 2

t + 0.5 = -0.790569415 Simplifying t + 0.5 = -0.790569415 Reorder the terms: 0.5 + t = -0.790569415 Solving 0.5 + t = -0.790569415 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = -0.790569415 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = -0.790569415 + -0.5 t = -0.790569415 + -0.5 Combine like terms: -0.790569415 + -0.5 = -1.290569415 t = -1.290569415 Simplifying t = -1.290569415

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.290569415, -1.290569415}

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