-16t^2+40t+175=0

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Solution for -16t^2+40t+175=0 equation:


Simplifying
-16t2 + 40t + 175 = 0

Reorder the terms:
175 + 40t + -16t2 = 0

Solving
175 + 40t + -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'.
-10.9375 + -2.5t + t2 = 0

Move the constant term to the right:

Add '10.9375' to each side of the equation.
-10.9375 + -2.5t + 10.9375 + t2 = 0 + 10.9375

Reorder the terms:
-10.9375 + 10.9375 + -2.5t + t2 = 0 + 10.9375

Combine like terms: -10.9375 + 10.9375 = 0.0000
0.0000 + -2.5t + t2 = 0 + 10.9375
-2.5t + t2 = 0 + 10.9375

Combine like terms: 0 + 10.9375 = 10.9375
-2.5t + t2 = 10.9375

The t term is -2.5t.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5t + 1.5625 + t2 = 10.9375 + 1.5625

Reorder the terms:
1.5625 + -2.5t + t2 = 10.9375 + 1.5625

Combine like terms: 10.9375 + 1.5625 = 12.5
1.5625 + -2.5t + t2 = 12.5

Factor a perfect square on the left side:
(t + -1.25)(t + -1.25) = 12.5

Calculate the square root of the right side: 3.535533906

Break this problem into two subproblems by setting 
(t + -1.25) equal to 3.535533906 and -3.535533906.

Subproblem 1

t + -1.25 = 3.535533906 Simplifying t + -1.25 = 3.535533906 Reorder the terms: -1.25 + t = 3.535533906 Solving -1.25 + t = 3.535533906 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + t = 3.535533906 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + t = 3.535533906 + 1.25 t = 3.535533906 + 1.25 Combine like terms: 3.535533906 + 1.25 = 4.785533906 t = 4.785533906 Simplifying t = 4.785533906

Subproblem 2

t + -1.25 = -3.535533906 Simplifying t + -1.25 = -3.535533906 Reorder the terms: -1.25 + t = -3.535533906 Solving -1.25 + t = -3.535533906 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + t = -3.535533906 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + t = -3.535533906 + 1.25 t = -3.535533906 + 1.25 Combine like terms: -3.535533906 + 1.25 = -2.285533906 t = -2.285533906 Simplifying t = -2.285533906

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.785533906, -2.285533906}

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