-16t^2+76t+135=0

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Solution for -16t^2+76t+135=0 equation:


Simplifying
-16t2 + 76t + 135 = 0

Reorder the terms:
135 + 76t + -16t2 = 0

Solving
135 + 76t + -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'.
-8.4375 + -4.75t + t2 = 0

Move the constant term to the right:

Add '8.4375' to each side of the equation.
-8.4375 + -4.75t + 8.4375 + t2 = 0 + 8.4375

Reorder the terms:
-8.4375 + 8.4375 + -4.75t + t2 = 0 + 8.4375

Combine like terms: -8.4375 + 8.4375 = 0.0000
0.0000 + -4.75t + t2 = 0 + 8.4375
-4.75t + t2 = 0 + 8.4375

Combine like terms: 0 + 8.4375 = 8.4375
-4.75t + t2 = 8.4375

The t term is -4.75t.  Take half its coefficient (-2.375).
Square it (5.640625) and add it to both sides.

Add '5.640625' to each side of the equation.
-4.75t + 5.640625 + t2 = 8.4375 + 5.640625

Reorder the terms:
5.640625 + -4.75t + t2 = 8.4375 + 5.640625

Combine like terms: 8.4375 + 5.640625 = 14.078125
5.640625 + -4.75t + t2 = 14.078125

Factor a perfect square on the left side:
(t + -2.375)(t + -2.375) = 14.078125

Calculate the square root of the right side: 3.752082755

Break this problem into two subproblems by setting 
(t + -2.375) equal to 3.752082755 and -3.752082755.

Subproblem 1

t + -2.375 = 3.752082755 Simplifying t + -2.375 = 3.752082755 Reorder the terms: -2.375 + t = 3.752082755 Solving -2.375 + t = 3.752082755 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.375' to each side of the equation. -2.375 + 2.375 + t = 3.752082755 + 2.375 Combine like terms: -2.375 + 2.375 = 0.000 0.000 + t = 3.752082755 + 2.375 t = 3.752082755 + 2.375 Combine like terms: 3.752082755 + 2.375 = 6.127082755 t = 6.127082755 Simplifying t = 6.127082755

Subproblem 2

t + -2.375 = -3.752082755 Simplifying t + -2.375 = -3.752082755 Reorder the terms: -2.375 + t = -3.752082755 Solving -2.375 + t = -3.752082755 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.375' to each side of the equation. -2.375 + 2.375 + t = -3.752082755 + 2.375 Combine like terms: -2.375 + 2.375 = 0.000 0.000 + t = -3.752082755 + 2.375 t = -3.752082755 + 2.375 Combine like terms: -3.752082755 + 2.375 = -1.377082755 t = -1.377082755 Simplifying t = -1.377082755

Solution

The solution to the problem is based on the solutions from the subproblems. t = {6.127082755, -1.377082755}

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