16.1t^2+13.8996t-3=0

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Solution for 16.1t^2+13.8996t-3=0 equation:


Simplifying
16.1t2 + 13.8996t + -3 = 0

Reorder the terms:
-3 + 13.8996t + 16.1t2 = 0

Solving
-3 + 13.8996t + 16.1t2 = 0

Solving for variable 't'.

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

Divide each side by '16.1'.
-0.1863354037 + 0.8633291925t + t2 = 0

Move the constant term to the right:

Add '0.1863354037' to each side of the equation.
-0.1863354037 + 0.8633291925t + 0.1863354037 + t2 = 0 + 0.1863354037

Reorder the terms:
-0.1863354037 + 0.1863354037 + 0.8633291925t + t2 = 0 + 0.1863354037

Combine like terms: -0.1863354037 + 0.1863354037 = 0.0000000000
0.0000000000 + 0.8633291925t + t2 = 0 + 0.1863354037
0.8633291925t + t2 = 0 + 0.1863354037

Combine like terms: 0 + 0.1863354037 = 0.1863354037
0.8633291925t + t2 = 0.1863354037

The t term is 0.8633291925t.  Take half its coefficient (0.4316645963).
Square it (0.1863343237) and add it to both sides.

Add '0.1863343237' to each side of the equation.
0.8633291925t + 0.1863343237 + t2 = 0.1863354037 + 0.1863343237

Reorder the terms:
0.1863343237 + 0.8633291925t + t2 = 0.1863354037 + 0.1863343237

Combine like terms: 0.1863354037 + 0.1863343237 = 0.3726697274
0.1863343237 + 0.8633291925t + t2 = 0.3726697274

Factor a perfect square on the left side:
(t + 0.4316645963)(t + 0.4316645963) = 0.3726697274

Calculate the square root of the right side: 0.610466811

Break this problem into two subproblems by setting 
(t + 0.4316645963) equal to 0.610466811 and -0.610466811.

Subproblem 1

t + 0.4316645963 = 0.610466811 Simplifying t + 0.4316645963 = 0.610466811 Reorder the terms: 0.4316645963 + t = 0.610466811 Solving 0.4316645963 + t = 0.610466811 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.4316645963' to each side of the equation. 0.4316645963 + -0.4316645963 + t = 0.610466811 + -0.4316645963 Combine like terms: 0.4316645963 + -0.4316645963 = 0.0000000000 0.0000000000 + t = 0.610466811 + -0.4316645963 t = 0.610466811 + -0.4316645963 Combine like terms: 0.610466811 + -0.4316645963 = 0.1788022147 t = 0.1788022147 Simplifying t = 0.1788022147

Subproblem 2

t + 0.4316645963 = -0.610466811 Simplifying t + 0.4316645963 = -0.610466811 Reorder the terms: 0.4316645963 + t = -0.610466811 Solving 0.4316645963 + t = -0.610466811 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.4316645963' to each side of the equation. 0.4316645963 + -0.4316645963 + t = -0.610466811 + -0.4316645963 Combine like terms: 0.4316645963 + -0.4316645963 = 0.0000000000 0.0000000000 + t = -0.610466811 + -0.4316645963 t = -0.610466811 + -0.4316645963 Combine like terms: -0.610466811 + -0.4316645963 = -1.0421314073 t = -1.0421314073 Simplifying t = -1.0421314073

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.1788022147, -1.0421314073}

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