-16t^2-25t+200=0

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Solution for -16t^2-25t+200=0 equation:


Simplifying
-16t2 + -25t + 200 = 0

Reorder the terms:
200 + -25t + -16t2 = 0

Solving
200 + -25t + -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'.
-12.5 + 1.5625t + t2 = 0

Move the constant term to the right:

Add '12.5' to each side of the equation.
-12.5 + 1.5625t + 12.5 + t2 = 0 + 12.5

Reorder the terms:
-12.5 + 12.5 + 1.5625t + t2 = 0 + 12.5

Combine like terms: -12.5 + 12.5 = 0.0
0.0 + 1.5625t + t2 = 0 + 12.5
1.5625t + t2 = 0 + 12.5

Combine like terms: 0 + 12.5 = 12.5
1.5625t + t2 = 12.5

The t term is 1.5625t.  Take half its coefficient (0.78125).
Square it (0.6103515625) and add it to both sides.

Add '0.6103515625' to each side of the equation.
1.5625t + 0.6103515625 + t2 = 12.5 + 0.6103515625

Reorder the terms:
0.6103515625 + 1.5625t + t2 = 12.5 + 0.6103515625

Combine like terms: 12.5 + 0.6103515625 = 13.1103515625
0.6103515625 + 1.5625t + t2 = 13.1103515625

Factor a perfect square on the left side:
(t + 0.78125)(t + 0.78125) = 13.1103515625

Calculate the square root of the right side: 3.620821946

Break this problem into two subproblems by setting 
(t + 0.78125) equal to 3.620821946 and -3.620821946.

Subproblem 1

t + 0.78125 = 3.620821946 Simplifying t + 0.78125 = 3.620821946 Reorder the terms: 0.78125 + t = 3.620821946 Solving 0.78125 + t = 3.620821946 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.78125' to each side of the equation. 0.78125 + -0.78125 + t = 3.620821946 + -0.78125 Combine like terms: 0.78125 + -0.78125 = 0.00000 0.00000 + t = 3.620821946 + -0.78125 t = 3.620821946 + -0.78125 Combine like terms: 3.620821946 + -0.78125 = 2.839571946 t = 2.839571946 Simplifying t = 2.839571946

Subproblem 2

t + 0.78125 = -3.620821946 Simplifying t + 0.78125 = -3.620821946 Reorder the terms: 0.78125 + t = -3.620821946 Solving 0.78125 + t = -3.620821946 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.78125' to each side of the equation. 0.78125 + -0.78125 + t = -3.620821946 + -0.78125 Combine like terms: 0.78125 + -0.78125 = 0.00000 0.00000 + t = -3.620821946 + -0.78125 t = -3.620821946 + -0.78125 Combine like terms: -3.620821946 + -0.78125 = -4.402071946 t = -4.402071946 Simplifying t = -4.402071946

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.839571946, -4.402071946}

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