-16t^2+105t+200=0

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Solution for -16t^2+105t+200=0 equation:


Simplifying
-16t2 + 105t + 200 = 0

Reorder the terms:
200 + 105t + -16t2 = 0

Solving
200 + 105t + -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 + -6.5625t + t2 = 0

Move the constant term to the right:

Add '12.5' to each side of the equation.
-12.5 + -6.5625t + 12.5 + t2 = 0 + 12.5

Reorder the terms:
-12.5 + 12.5 + -6.5625t + t2 = 0 + 12.5

Combine like terms: -12.5 + 12.5 = 0.0
0.0 + -6.5625t + t2 = 0 + 12.5
-6.5625t + t2 = 0 + 12.5

Combine like terms: 0 + 12.5 = 12.5
-6.5625t + t2 = 12.5

The t term is -6.5625t.  Take half its coefficient (-3.28125).
Square it (10.76660156) and add it to both sides.

Add '10.76660156' to each side of the equation.
-6.5625t + 10.76660156 + t2 = 12.5 + 10.76660156

Reorder the terms:
10.76660156 + -6.5625t + t2 = 12.5 + 10.76660156

Combine like terms: 12.5 + 10.76660156 = 23.26660156
10.76660156 + -6.5625t + t2 = 23.26660156

Factor a perfect square on the left side:
(t + -3.28125)(t + -3.28125) = 23.26660156

Calculate the square root of the right side: 4.823546575

Break this problem into two subproblems by setting 
(t + -3.28125) equal to 4.823546575 and -4.823546575.

Subproblem 1

t + -3.28125 = 4.823546575 Simplifying t + -3.28125 = 4.823546575 Reorder the terms: -3.28125 + t = 4.823546575 Solving -3.28125 + t = 4.823546575 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.28125' to each side of the equation. -3.28125 + 3.28125 + t = 4.823546575 + 3.28125 Combine like terms: -3.28125 + 3.28125 = 0.00000 0.00000 + t = 4.823546575 + 3.28125 t = 4.823546575 + 3.28125 Combine like terms: 4.823546575 + 3.28125 = 8.104796575 t = 8.104796575 Simplifying t = 8.104796575

Subproblem 2

t + -3.28125 = -4.823546575 Simplifying t + -3.28125 = -4.823546575 Reorder the terms: -3.28125 + t = -4.823546575 Solving -3.28125 + t = -4.823546575 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.28125' to each side of the equation. -3.28125 + 3.28125 + t = -4.823546575 + 3.28125 Combine like terms: -3.28125 + 3.28125 = 0.00000 0.00000 + t = -4.823546575 + 3.28125 t = -4.823546575 + 3.28125 Combine like terms: -4.823546575 + 3.28125 = -1.542296575 t = -1.542296575 Simplifying t = -1.542296575

Solution

The solution to the problem is based on the solutions from the subproblems. t = {8.104796575, -1.542296575}

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