-16t^2-11t+123=0

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Solution for -16t^2-11t+123=0 equation:


Simplifying
-16t2 + -11t + 123 = 0

Reorder the terms:
123 + -11t + -16t2 = 0

Solving
123 + -11t + -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'.
-7.6875 + 0.6875t + t2 = 0

Move the constant term to the right:

Add '7.6875' to each side of the equation.
-7.6875 + 0.6875t + 7.6875 + t2 = 0 + 7.6875

Reorder the terms:
-7.6875 + 7.6875 + 0.6875t + t2 = 0 + 7.6875

Combine like terms: -7.6875 + 7.6875 = 0.0000
0.0000 + 0.6875t + t2 = 0 + 7.6875
0.6875t + t2 = 0 + 7.6875

Combine like terms: 0 + 7.6875 = 7.6875
0.6875t + t2 = 7.6875

The t term is 0.6875t.  Take half its coefficient (0.34375).
Square it (0.1181640625) and add it to both sides.

Add '0.1181640625' to each side of the equation.
0.6875t + 0.1181640625 + t2 = 7.6875 + 0.1181640625

Reorder the terms:
0.1181640625 + 0.6875t + t2 = 7.6875 + 0.1181640625

Combine like terms: 7.6875 + 0.1181640625 = 7.8056640625
0.1181640625 + 0.6875t + t2 = 7.8056640625

Factor a perfect square on the left side:
(t + 0.34375)(t + 0.34375) = 7.8056640625

Calculate the square root of the right side: 2.793861855

Break this problem into two subproblems by setting 
(t + 0.34375) equal to 2.793861855 and -2.793861855.

Subproblem 1

t + 0.34375 = 2.793861855 Simplifying t + 0.34375 = 2.793861855 Reorder the terms: 0.34375 + t = 2.793861855 Solving 0.34375 + t = 2.793861855 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.34375' to each side of the equation. 0.34375 + -0.34375 + t = 2.793861855 + -0.34375 Combine like terms: 0.34375 + -0.34375 = 0.00000 0.00000 + t = 2.793861855 + -0.34375 t = 2.793861855 + -0.34375 Combine like terms: 2.793861855 + -0.34375 = 2.450111855 t = 2.450111855 Simplifying t = 2.450111855

Subproblem 2

t + 0.34375 = -2.793861855 Simplifying t + 0.34375 = -2.793861855 Reorder the terms: 0.34375 + t = -2.793861855 Solving 0.34375 + t = -2.793861855 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.34375' to each side of the equation. 0.34375 + -0.34375 + t = -2.793861855 + -0.34375 Combine like terms: 0.34375 + -0.34375 = 0.00000 0.00000 + t = -2.793861855 + -0.34375 t = -2.793861855 + -0.34375 Combine like terms: -2.793861855 + -0.34375 = -3.137611855 t = -3.137611855 Simplifying t = -3.137611855

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.450111855, -3.137611855}

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