-0.25t^2+9t+26=0

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Solution for -0.25t^2+9t+26=0 equation:


Simplifying
-0.25t2 + 9t + 26 = 0

Reorder the terms:
26 + 9t + -0.25t2 = 0

Solving
26 + 9t + -0.25t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
-0.25 the coefficient of the squared term: 

Divide each side by '-0.25'.
-104 + -36t + t2 = 0

Move the constant term to the right:

Add '104' to each side of the equation.
-104 + -36t + 104 + t2 = 0 + 104

Reorder the terms:
-104 + 104 + -36t + t2 = 0 + 104

Combine like terms: -104 + 104 = 0
0 + -36t + t2 = 0 + 104
-36t + t2 = 0 + 104

Combine like terms: 0 + 104 = 104
-36t + t2 = 104

The t term is -36t.  Take half its coefficient (-18).
Square it (324) and add it to both sides.

Add '324' to each side of the equation.
-36t + 324 + t2 = 104 + 324

Reorder the terms:
324 + -36t + t2 = 104 + 324

Combine like terms: 104 + 324 = 428
324 + -36t + t2 = 428

Factor a perfect square on the left side:
(t + -18)(t + -18) = 428

Calculate the square root of the right side: 20.688160866

Break this problem into two subproblems by setting 
(t + -18) equal to 20.688160866 and -20.688160866.

Subproblem 1

t + -18 = 20.688160866 Simplifying t + -18 = 20.688160866 Reorder the terms: -18 + t = 20.688160866 Solving -18 + t = 20.688160866 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + t = 20.688160866 + 18 Combine like terms: -18 + 18 = 0 0 + t = 20.688160866 + 18 t = 20.688160866 + 18 Combine like terms: 20.688160866 + 18 = 38.688160866 t = 38.688160866 Simplifying t = 38.688160866

Subproblem 2

t + -18 = -20.688160866 Simplifying t + -18 = -20.688160866 Reorder the terms: -18 + t = -20.688160866 Solving -18 + t = -20.688160866 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + t = -20.688160866 + 18 Combine like terms: -18 + 18 = 0 0 + t = -20.688160866 + 18 t = -20.688160866 + 18 Combine like terms: -20.688160866 + 18 = -2.688160866 t = -2.688160866 Simplifying t = -2.688160866

Solution

The solution to the problem is based on the solutions from the subproblems. t = {38.688160866, -2.688160866}

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