0=-16t^2+205t+10

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Solution for 0=-16t^2+205t+10 equation:


Simplifying
0 = -16t2 + 205t + 10

Reorder the terms:
0 = 10 + 205t + -16t2

Solving
0 = 10 + 205t + -16t2

Solving for variable 't'.

Combine like terms: 0 + -10 = -10
-10 + -205t + 16t2 = 10 + 205t + -16t2 + -10 + -205t + 16t2

Reorder the terms:
-10 + -205t + 16t2 = 10 + -10 + 205t + -205t + -16t2 + 16t2

Combine like terms: 10 + -10 = 0
-10 + -205t + 16t2 = 0 + 205t + -205t + -16t2 + 16t2
-10 + -205t + 16t2 = 205t + -205t + -16t2 + 16t2

Combine like terms: 205t + -205t = 0
-10 + -205t + 16t2 = 0 + -16t2 + 16t2
-10 + -205t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
-10 + -205t + 16t2 = 0

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

Divide each side by '16'.
-0.625 + -12.8125t + t2 = 0

Move the constant term to the right:

Add '0.625' to each side of the equation.
-0.625 + -12.8125t + 0.625 + t2 = 0 + 0.625

Reorder the terms:
-0.625 + 0.625 + -12.8125t + t2 = 0 + 0.625

Combine like terms: -0.625 + 0.625 = 0.000
0.000 + -12.8125t + t2 = 0 + 0.625
-12.8125t + t2 = 0 + 0.625

Combine like terms: 0 + 0.625 = 0.625
-12.8125t + t2 = 0.625

The t term is -12.8125t.  Take half its coefficient (-6.40625).
Square it (41.04003906) and add it to both sides.

Add '41.04003906' to each side of the equation.
-12.8125t + 41.04003906 + t2 = 0.625 + 41.04003906

Reorder the terms:
41.04003906 + -12.8125t + t2 = 0.625 + 41.04003906

Combine like terms: 0.625 + 41.04003906 = 41.66503906
41.04003906 + -12.8125t + t2 = 41.66503906

Factor a perfect square on the left side:
(t + -6.40625)(t + -6.40625) = 41.66503906

Calculate the square root of the right side: 6.454846169

Break this problem into two subproblems by setting 
(t + -6.40625) equal to 6.454846169 and -6.454846169.

Subproblem 1

t + -6.40625 = 6.454846169 Simplifying t + -6.40625 = 6.454846169 Reorder the terms: -6.40625 + t = 6.454846169 Solving -6.40625 + t = 6.454846169 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '6.40625' to each side of the equation. -6.40625 + 6.40625 + t = 6.454846169 + 6.40625 Combine like terms: -6.40625 + 6.40625 = 0.00000 0.00000 + t = 6.454846169 + 6.40625 t = 6.454846169 + 6.40625 Combine like terms: 6.454846169 + 6.40625 = 12.861096169 t = 12.861096169 Simplifying t = 12.861096169

Subproblem 2

t + -6.40625 = -6.454846169 Simplifying t + -6.40625 = -6.454846169 Reorder the terms: -6.40625 + t = -6.454846169 Solving -6.40625 + t = -6.454846169 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '6.40625' to each side of the equation. -6.40625 + 6.40625 + t = -6.454846169 + 6.40625 Combine like terms: -6.40625 + 6.40625 = 0.00000 0.00000 + t = -6.454846169 + 6.40625 t = -6.454846169 + 6.40625 Combine like terms: -6.454846169 + 6.40625 = -0.048596169 t = -0.048596169 Simplifying t = -0.048596169

Solution

The solution to the problem is based on the solutions from the subproblems. t = {12.861096169, -0.048596169}

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