16t^2-31t-14=0

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Solution for 16t^2-31t-14=0 equation:


Simplifying
16t2 + -31t + -14 = 0

Reorder the terms:
-14 + -31t + 16t2 = 0

Solving
-14 + -31t + 16t2 = 0

Solving for variable 't'.

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

Divide each side by '16'.
-0.875 + -1.9375t + t2 = 0

Move the constant term to the right:

Add '0.875' to each side of the equation.
-0.875 + -1.9375t + 0.875 + t2 = 0 + 0.875

Reorder the terms:
-0.875 + 0.875 + -1.9375t + t2 = 0 + 0.875

Combine like terms: -0.875 + 0.875 = 0.000
0.000 + -1.9375t + t2 = 0 + 0.875
-1.9375t + t2 = 0 + 0.875

Combine like terms: 0 + 0.875 = 0.875
-1.9375t + t2 = 0.875

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 = 0.875 + 0.9384765625

Reorder the terms:
0.9384765625 + -1.9375t + t2 = 0.875 + 0.9384765625

Combine like terms: 0.875 + 0.9384765625 = 1.8134765625
0.9384765625 + -1.9375t + t2 = 1.8134765625

Factor a perfect square on the left side:
(t + -0.96875)(t + -0.96875) = 1.8134765625

Calculate the square root of the right side: 1.346653839

Break this problem into two subproblems by setting 
(t + -0.96875) equal to 1.346653839 and -1.346653839.

Subproblem 1

t + -0.96875 = 1.346653839 Simplifying t + -0.96875 = 1.346653839 Reorder the terms: -0.96875 + t = 1.346653839 Solving -0.96875 + t = 1.346653839 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 = 1.346653839 + 0.96875 Combine like terms: -0.96875 + 0.96875 = 0.00000 0.00000 + t = 1.346653839 + 0.96875 t = 1.346653839 + 0.96875 Combine like terms: 1.346653839 + 0.96875 = 2.315403839 t = 2.315403839 Simplifying t = 2.315403839

Subproblem 2

t + -0.96875 = -1.346653839 Simplifying t + -0.96875 = -1.346653839 Reorder the terms: -0.96875 + t = -1.346653839 Solving -0.96875 + t = -1.346653839 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 = -1.346653839 + 0.96875 Combine like terms: -0.96875 + 0.96875 = 0.00000 0.00000 + t = -1.346653839 + 0.96875 t = -1.346653839 + 0.96875 Combine like terms: -1.346653839 + 0.96875 = -0.377903839 t = -0.377903839 Simplifying t = -0.377903839

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.315403839, -0.377903839}

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