0=-16t^2+50t-31

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Solution for 0=-16t^2+50t-31 equation:


Simplifying
0 = -16t2 + 50t + -31

Reorder the terms:
0 = -31 + 50t + -16t2

Solving
0 = -31 + 50t + -16t2

Solving for variable 't'.

Combine like terms: 0 + 31 = 31
31 + -50t + 16t2 = -31 + 50t + -16t2 + 31 + -50t + 16t2

Reorder the terms:
31 + -50t + 16t2 = -31 + 31 + 50t + -50t + -16t2 + 16t2

Combine like terms: -31 + 31 = 0
31 + -50t + 16t2 = 0 + 50t + -50t + -16t2 + 16t2
31 + -50t + 16t2 = 50t + -50t + -16t2 + 16t2

Combine like terms: 50t + -50t = 0
31 + -50t + 16t2 = 0 + -16t2 + 16t2
31 + -50t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
31 + -50t + 16t2 = 0

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

Divide each side by '16'.
1.9375 + -3.125t + t2 = 0

Move the constant term to the right:

Add '-1.9375' to each side of the equation.
1.9375 + -3.125t + -1.9375 + t2 = 0 + -1.9375

Reorder the terms:
1.9375 + -1.9375 + -3.125t + t2 = 0 + -1.9375

Combine like terms: 1.9375 + -1.9375 = 0.0000
0.0000 + -3.125t + t2 = 0 + -1.9375
-3.125t + t2 = 0 + -1.9375

Combine like terms: 0 + -1.9375 = -1.9375
-3.125t + t2 = -1.9375

The t term is -3.125t.  Take half its coefficient (-1.5625).
Square it (2.44140625) and add it to both sides.

Add '2.44140625' to each side of the equation.
-3.125t + 2.44140625 + t2 = -1.9375 + 2.44140625

Reorder the terms:
2.44140625 + -3.125t + t2 = -1.9375 + 2.44140625

Combine like terms: -1.9375 + 2.44140625 = 0.50390625
2.44140625 + -3.125t + t2 = 0.50390625

Factor a perfect square on the left side:
(t + -1.5625)(t + -1.5625) = 0.50390625

Calculate the square root of the right side: 0.709863543

Break this problem into two subproblems by setting 
(t + -1.5625) equal to 0.709863543 and -0.709863543.

Subproblem 1

t + -1.5625 = 0.709863543 Simplifying t + -1.5625 = 0.709863543 Reorder the terms: -1.5625 + t = 0.709863543 Solving -1.5625 + t = 0.709863543 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.5625' to each side of the equation. -1.5625 + 1.5625 + t = 0.709863543 + 1.5625 Combine like terms: -1.5625 + 1.5625 = 0.0000 0.0000 + t = 0.709863543 + 1.5625 t = 0.709863543 + 1.5625 Combine like terms: 0.709863543 + 1.5625 = 2.272363543 t = 2.272363543 Simplifying t = 2.272363543

Subproblem 2

t + -1.5625 = -0.709863543 Simplifying t + -1.5625 = -0.709863543 Reorder the terms: -1.5625 + t = -0.709863543 Solving -1.5625 + t = -0.709863543 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.5625' to each side of the equation. -1.5625 + 1.5625 + t = -0.709863543 + 1.5625 Combine like terms: -1.5625 + 1.5625 = 0.0000 0.0000 + t = -0.709863543 + 1.5625 t = -0.709863543 + 1.5625 Combine like terms: -0.709863543 + 1.5625 = 0.852636457 t = 0.852636457 Simplifying t = 0.852636457

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.272363543, 0.852636457}

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