0=8t^2-71t-192

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Solution for 0=8t^2-71t-192 equation:


Simplifying
0 = 8t2 + -71t + -192

Reorder the terms:
0 = -192 + -71t + 8t2

Solving
0 = -192 + -71t + 8t2

Solving for variable 't'.

Combine like terms: 0 + 192 = 192
192 + 71t + -8t2 = -192 + -71t + 8t2 + 192 + 71t + -8t2

Reorder the terms:
192 + 71t + -8t2 = -192 + 192 + -71t + 71t + 8t2 + -8t2

Combine like terms: -192 + 192 = 0
192 + 71t + -8t2 = 0 + -71t + 71t + 8t2 + -8t2
192 + 71t + -8t2 = -71t + 71t + 8t2 + -8t2

Combine like terms: -71t + 71t = 0
192 + 71t + -8t2 = 0 + 8t2 + -8t2
192 + 71t + -8t2 = 8t2 + -8t2

Combine like terms: 8t2 + -8t2 = 0
192 + 71t + -8t2 = 0

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

Divide each side by '-8'.
-24 + -8.875t + t2 = 0

Move the constant term to the right:

Add '24' to each side of the equation.
-24 + -8.875t + 24 + t2 = 0 + 24

Reorder the terms:
-24 + 24 + -8.875t + t2 = 0 + 24

Combine like terms: -24 + 24 = 0
0 + -8.875t + t2 = 0 + 24
-8.875t + t2 = 0 + 24

Combine like terms: 0 + 24 = 24
-8.875t + t2 = 24

The t term is -8.875t.  Take half its coefficient (-4.4375).
Square it (19.69140625) and add it to both sides.

Add '19.69140625' to each side of the equation.
-8.875t + 19.69140625 + t2 = 24 + 19.69140625

Reorder the terms:
19.69140625 + -8.875t + t2 = 24 + 19.69140625

Combine like terms: 24 + 19.69140625 = 43.69140625
19.69140625 + -8.875t + t2 = 43.69140625

Factor a perfect square on the left side:
(t + -4.4375)(t + -4.4375) = 43.69140625

Calculate the square root of the right side: 6.609947522

Break this problem into two subproblems by setting 
(t + -4.4375) equal to 6.609947522 and -6.609947522.

Subproblem 1

t + -4.4375 = 6.609947522 Simplifying t + -4.4375 = 6.609947522 Reorder the terms: -4.4375 + t = 6.609947522 Solving -4.4375 + t = 6.609947522 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4.4375' to each side of the equation. -4.4375 + 4.4375 + t = 6.609947522 + 4.4375 Combine like terms: -4.4375 + 4.4375 = 0.0000 0.0000 + t = 6.609947522 + 4.4375 t = 6.609947522 + 4.4375 Combine like terms: 6.609947522 + 4.4375 = 11.047447522 t = 11.047447522 Simplifying t = 11.047447522

Subproblem 2

t + -4.4375 = -6.609947522 Simplifying t + -4.4375 = -6.609947522 Reorder the terms: -4.4375 + t = -6.609947522 Solving -4.4375 + t = -6.609947522 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4.4375' to each side of the equation. -4.4375 + 4.4375 + t = -6.609947522 + 4.4375 Combine like terms: -4.4375 + 4.4375 = 0.0000 0.0000 + t = -6.609947522 + 4.4375 t = -6.609947522 + 4.4375 Combine like terms: -6.609947522 + 4.4375 = -2.172447522 t = -2.172447522 Simplifying t = -2.172447522

Solution

The solution to the problem is based on the solutions from the subproblems. t = {11.047447522, -2.172447522}

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