0=-16t^2+83t+12389

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Solution for 0=-16t^2+83t+12389 equation:


Simplifying
0 = -16t2 + 83t + 12389

Reorder the terms:
0 = 12389 + 83t + -16t2

Solving
0 = 12389 + 83t + -16t2

Solving for variable 't'.

Combine like terms: 0 + -12389 = -12389
-12389 + -83t + 16t2 = 12389 + 83t + -16t2 + -12389 + -83t + 16t2

Reorder the terms:
-12389 + -83t + 16t2 = 12389 + -12389 + 83t + -83t + -16t2 + 16t2

Combine like terms: 12389 + -12389 = 0
-12389 + -83t + 16t2 = 0 + 83t + -83t + -16t2 + 16t2
-12389 + -83t + 16t2 = 83t + -83t + -16t2 + 16t2

Combine like terms: 83t + -83t = 0
-12389 + -83t + 16t2 = 0 + -16t2 + 16t2
-12389 + -83t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
-12389 + -83t + 16t2 = 0

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

Divide each side by '16'.
-774.3125 + -5.1875t + t2 = 0

Move the constant term to the right:

Add '774.3125' to each side of the equation.
-774.3125 + -5.1875t + 774.3125 + t2 = 0 + 774.3125

Reorder the terms:
-774.3125 + 774.3125 + -5.1875t + t2 = 0 + 774.3125

Combine like terms: -774.3125 + 774.3125 = 0.0000
0.0000 + -5.1875t + t2 = 0 + 774.3125
-5.1875t + t2 = 0 + 774.3125

Combine like terms: 0 + 774.3125 = 774.3125
-5.1875t + t2 = 774.3125

The t term is -5.1875t.  Take half its coefficient (-2.59375).
Square it (6.727539063) and add it to both sides.

Add '6.727539063' to each side of the equation.
-5.1875t + 6.727539063 + t2 = 774.3125 + 6.727539063

Reorder the terms:
6.727539063 + -5.1875t + t2 = 774.3125 + 6.727539063

Combine like terms: 774.3125 + 6.727539063 = 781.040039063
6.727539063 + -5.1875t + t2 = 781.040039063

Factor a perfect square on the left side:
(t + -2.59375)(t + -2.59375) = 781.040039063

Calculate the square root of the right side: 27.947093571

Break this problem into two subproblems by setting 
(t + -2.59375) equal to 27.947093571 and -27.947093571.

Subproblem 1

t + -2.59375 = 27.947093571 Simplifying t + -2.59375 = 27.947093571 Reorder the terms: -2.59375 + t = 27.947093571 Solving -2.59375 + t = 27.947093571 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.59375' to each side of the equation. -2.59375 + 2.59375 + t = 27.947093571 + 2.59375 Combine like terms: -2.59375 + 2.59375 = 0.00000 0.00000 + t = 27.947093571 + 2.59375 t = 27.947093571 + 2.59375 Combine like terms: 27.947093571 + 2.59375 = 30.540843571 t = 30.540843571 Simplifying t = 30.540843571

Subproblem 2

t + -2.59375 = -27.947093571 Simplifying t + -2.59375 = -27.947093571 Reorder the terms: -2.59375 + t = -27.947093571 Solving -2.59375 + t = -27.947093571 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.59375' to each side of the equation. -2.59375 + 2.59375 + t = -27.947093571 + 2.59375 Combine like terms: -2.59375 + 2.59375 = 0.00000 0.00000 + t = -27.947093571 + 2.59375 t = -27.947093571 + 2.59375 Combine like terms: -27.947093571 + 2.59375 = -25.353343571 t = -25.353343571 Simplifying t = -25.353343571

Solution

The solution to the problem is based on the solutions from the subproblems. t = {30.540843571, -25.353343571}

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