-16t^2+25t+260=0

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Solution for -16t^2+25t+260=0 equation:


Simplifying
-16t2 + 25t + 260 = 0

Reorder the terms:
260 + 25t + -16t2 = 0

Solving
260 + 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'.
-16.25 + -1.5625t + t2 = 0

Move the constant term to the right:

Add '16.25' to each side of the equation.
-16.25 + -1.5625t + 16.25 + t2 = 0 + 16.25

Reorder the terms:
-16.25 + 16.25 + -1.5625t + t2 = 0 + 16.25

Combine like terms: -16.25 + 16.25 = 0.00
0.00 + -1.5625t + t2 = 0 + 16.25
-1.5625t + t2 = 0 + 16.25

Combine like terms: 0 + 16.25 = 16.25
-1.5625t + t2 = 16.25

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 = 16.25 + 0.6103515625

Reorder the terms:
0.6103515625 + -1.5625t + t2 = 16.25 + 0.6103515625

Combine like terms: 16.25 + 0.6103515625 = 16.8603515625
0.6103515625 + -1.5625t + t2 = 16.8603515625

Factor a perfect square on the left side:
(t + -0.78125)(t + -0.78125) = 16.8603515625

Calculate the square root of the right side: 4.106135843

Break this problem into two subproblems by setting 
(t + -0.78125) equal to 4.106135843 and -4.106135843.

Subproblem 1

t + -0.78125 = 4.106135843 Simplifying t + -0.78125 = 4.106135843 Reorder the terms: -0.78125 + t = 4.106135843 Solving -0.78125 + t = 4.106135843 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 = 4.106135843 + 0.78125 Combine like terms: -0.78125 + 0.78125 = 0.00000 0.00000 + t = 4.106135843 + 0.78125 t = 4.106135843 + 0.78125 Combine like terms: 4.106135843 + 0.78125 = 4.887385843 t = 4.887385843 Simplifying t = 4.887385843

Subproblem 2

t + -0.78125 = -4.106135843 Simplifying t + -0.78125 = -4.106135843 Reorder the terms: -0.78125 + t = -4.106135843 Solving -0.78125 + t = -4.106135843 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 = -4.106135843 + 0.78125 Combine like terms: -0.78125 + 0.78125 = 0.00000 0.00000 + t = -4.106135843 + 0.78125 t = -4.106135843 + 0.78125 Combine like terms: -4.106135843 + 0.78125 = -3.324885843 t = -3.324885843 Simplifying t = -3.324885843

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.887385843, -3.324885843}

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