25=-2t^2+16t+0.5

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Solution for 25=-2t^2+16t+0.5 equation:


Simplifying
25 = -2t2 + 16t + 0.5

Reorder the terms:
25 = 0.5 + 16t + -2t2

Solving
25 = 0.5 + 16t + -2t2

Solving for variable 't'.

Combine like terms: 25 + -0.5 = 24.5
24.5 + -16t + 2t2 = 0.5 + 16t + -2t2 + -0.5 + -16t + 2t2

Reorder the terms:
24.5 + -16t + 2t2 = 0.5 + -0.5 + 16t + -16t + -2t2 + 2t2

Combine like terms: 0.5 + -0.5 = 0.0
24.5 + -16t + 2t2 = 0.0 + 16t + -16t + -2t2 + 2t2
24.5 + -16t + 2t2 = 16t + -16t + -2t2 + 2t2

Combine like terms: 16t + -16t = 0
24.5 + -16t + 2t2 = 0 + -2t2 + 2t2
24.5 + -16t + 2t2 = -2t2 + 2t2

Combine like terms: -2t2 + 2t2 = 0
24.5 + -16t + 2t2 = 0

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

Divide each side by '2'.
12.25 + -8t + t2 = 0

Move the constant term to the right:

Add '-12.25' to each side of the equation.
12.25 + -8t + -12.25 + t2 = 0 + -12.25

Reorder the terms:
12.25 + -12.25 + -8t + t2 = 0 + -12.25

Combine like terms: 12.25 + -12.25 = 0.00
0.00 + -8t + t2 = 0 + -12.25
-8t + t2 = 0 + -12.25

Combine like terms: 0 + -12.25 = -12.25
-8t + t2 = -12.25

The t term is -8t.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8t + 16 + t2 = -12.25 + 16

Reorder the terms:
16 + -8t + t2 = -12.25 + 16

Combine like terms: -12.25 + 16 = 3.75
16 + -8t + t2 = 3.75

Factor a perfect square on the left side:
(t + -4)(t + -4) = 3.75

Calculate the square root of the right side: 1.936491673

Break this problem into two subproblems by setting 
(t + -4) equal to 1.936491673 and -1.936491673.

Subproblem 1

t + -4 = 1.936491673 Simplifying t + -4 = 1.936491673 Reorder the terms: -4 + t = 1.936491673 Solving -4 + t = 1.936491673 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + t = 1.936491673 + 4 Combine like terms: -4 + 4 = 0 0 + t = 1.936491673 + 4 t = 1.936491673 + 4 Combine like terms: 1.936491673 + 4 = 5.936491673 t = 5.936491673 Simplifying t = 5.936491673

Subproblem 2

t + -4 = -1.936491673 Simplifying t + -4 = -1.936491673 Reorder the terms: -4 + t = -1.936491673 Solving -4 + t = -1.936491673 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + t = -1.936491673 + 4 Combine like terms: -4 + 4 = 0 0 + t = -1.936491673 + 4 t = -1.936491673 + 4 Combine like terms: -1.936491673 + 4 = 2.063508327 t = 2.063508327 Simplifying t = 2.063508327

Solution

The solution to the problem is based on the solutions from the subproblems. t = {5.936491673, 2.063508327}

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