-14=3+31t-16t^2

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Solution for -14=3+31t-16t^2 equation:


Simplifying
-14 = 3 + 31t + -16t2

Solving
-14 = 3 + 31t + -16t2

Solving for variable 't'.

Combine like terms: -14 + -3 = -17
-17 + -31t + 16t2 = 3 + 31t + -16t2 + -3 + -31t + 16t2

Reorder the terms:
-17 + -31t + 16t2 = 3 + -3 + 31t + -31t + -16t2 + 16t2

Combine like terms: 3 + -3 = 0
-17 + -31t + 16t2 = 0 + 31t + -31t + -16t2 + 16t2
-17 + -31t + 16t2 = 31t + -31t + -16t2 + 16t2

Combine like terms: 31t + -31t = 0
-17 + -31t + 16t2 = 0 + -16t2 + 16t2
-17 + -31t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
-17 + -31t + 16t2 = 0

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

Divide each side by '16'.
-1.0625 + -1.9375t + t2 = 0

Move the constant term to the right:

Add '1.0625' to each side of the equation.
-1.0625 + -1.9375t + 1.0625 + t2 = 0 + 1.0625

Reorder the terms:
-1.0625 + 1.0625 + -1.9375t + t2 = 0 + 1.0625

Combine like terms: -1.0625 + 1.0625 = 0.0000
0.0000 + -1.9375t + t2 = 0 + 1.0625
-1.9375t + t2 = 0 + 1.0625

Combine like terms: 0 + 1.0625 = 1.0625
-1.9375t + t2 = 1.0625

The t term is -1.9375t.  Take half its coefficient (-0.96875).
Square it (0.9384765625) and add it to both sides.

Add '0.9384765625' to each side of the equation.
-1.9375t + 0.9384765625 + t2 = 1.0625 + 0.9384765625

Reorder the terms:
0.9384765625 + -1.9375t + t2 = 1.0625 + 0.9384765625

Combine like terms: 1.0625 + 0.9384765625 = 2.0009765625
0.9384765625 + -1.9375t + t2 = 2.0009765625

Factor a perfect square on the left side:
(t + -0.96875)(t + -0.96875) = 2.0009765625

Calculate the square root of the right side: 1.414558787

Break this problem into two subproblems by setting 
(t + -0.96875) equal to 1.414558787 and -1.414558787.

Subproblem 1

t + -0.96875 = 1.414558787 Simplifying t + -0.96875 = 1.414558787 Reorder the terms: -0.96875 + t = 1.414558787 Solving -0.96875 + t = 1.414558787 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.96875' to each side of the equation. -0.96875 + 0.96875 + t = 1.414558787 + 0.96875 Combine like terms: -0.96875 + 0.96875 = 0.00000 0.00000 + t = 1.414558787 + 0.96875 t = 1.414558787 + 0.96875 Combine like terms: 1.414558787 + 0.96875 = 2.383308787 t = 2.383308787 Simplifying t = 2.383308787

Subproblem 2

t + -0.96875 = -1.414558787 Simplifying t + -0.96875 = -1.414558787 Reorder the terms: -0.96875 + t = -1.414558787 Solving -0.96875 + t = -1.414558787 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.96875' to each side of the equation. -0.96875 + 0.96875 + t = -1.414558787 + 0.96875 Combine like terms: -0.96875 + 0.96875 = 0.00000 0.00000 + t = -1.414558787 + 0.96875 t = -1.414558787 + 0.96875 Combine like terms: -1.414558787 + 0.96875 = -0.445808787 t = -0.445808787 Simplifying t = -0.445808787

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.383308787, -0.445808787}

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