-16t^2+13t+22=0

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Solution for -16t^2+13t+22=0 equation:


Simplifying
-16t2 + 13t + 22 = 0

Reorder the terms:
22 + 13t + -16t2 = 0

Solving
22 + 13t + -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'.
-1.375 + -0.8125t + t2 = 0

Move the constant term to the right:

Add '1.375' to each side of the equation.
-1.375 + -0.8125t + 1.375 + t2 = 0 + 1.375

Reorder the terms:
-1.375 + 1.375 + -0.8125t + t2 = 0 + 1.375

Combine like terms: -1.375 + 1.375 = 0.000
0.000 + -0.8125t + t2 = 0 + 1.375
-0.8125t + t2 = 0 + 1.375

Combine like terms: 0 + 1.375 = 1.375
-0.8125t + t2 = 1.375

The t term is -0.8125t.  Take half its coefficient (-0.40625).
Square it (0.1650390625) and add it to both sides.

Add '0.1650390625' to each side of the equation.
-0.8125t + 0.1650390625 + t2 = 1.375 + 0.1650390625

Reorder the terms:
0.1650390625 + -0.8125t + t2 = 1.375 + 0.1650390625

Combine like terms: 1.375 + 0.1650390625 = 1.5400390625
0.1650390625 + -0.8125t + t2 = 1.5400390625

Factor a perfect square on the left side:
(t + -0.40625)(t + -0.40625) = 1.5400390625

Calculate the square root of the right side: 1.240983103

Break this problem into two subproblems by setting 
(t + -0.40625) equal to 1.240983103 and -1.240983103.

Subproblem 1

t + -0.40625 = 1.240983103 Simplifying t + -0.40625 = 1.240983103 Reorder the terms: -0.40625 + t = 1.240983103 Solving -0.40625 + t = 1.240983103 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.40625' to each side of the equation. -0.40625 + 0.40625 + t = 1.240983103 + 0.40625 Combine like terms: -0.40625 + 0.40625 = 0.00000 0.00000 + t = 1.240983103 + 0.40625 t = 1.240983103 + 0.40625 Combine like terms: 1.240983103 + 0.40625 = 1.647233103 t = 1.647233103 Simplifying t = 1.647233103

Subproblem 2

t + -0.40625 = -1.240983103 Simplifying t + -0.40625 = -1.240983103 Reorder the terms: -0.40625 + t = -1.240983103 Solving -0.40625 + t = -1.240983103 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.40625' to each side of the equation. -0.40625 + 0.40625 + t = -1.240983103 + 0.40625 Combine like terms: -0.40625 + 0.40625 = 0.00000 0.00000 + t = -1.240983103 + 0.40625 t = -1.240983103 + 0.40625 Combine like terms: -1.240983103 + 0.40625 = -0.834733103 t = -0.834733103 Simplifying t = -0.834733103

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.647233103, -0.834733103}

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