-16t^2-23t+100=0

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Solution for -16t^2-23t+100=0 equation:


Simplifying
-16t2 + -23t + 100 = 0

Reorder the terms:
100 + -23t + -16t2 = 0

Solving
100 + -23t + -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'.
-6.25 + 1.4375t + t2 = 0

Move the constant term to the right:

Add '6.25' to each side of the equation.
-6.25 + 1.4375t + 6.25 + t2 = 0 + 6.25

Reorder the terms:
-6.25 + 6.25 + 1.4375t + t2 = 0 + 6.25

Combine like terms: -6.25 + 6.25 = 0.00
0.00 + 1.4375t + t2 = 0 + 6.25
1.4375t + t2 = 0 + 6.25

Combine like terms: 0 + 6.25 = 6.25
1.4375t + t2 = 6.25

The t term is 1.4375t.  Take half its coefficient (0.71875).
Square it (0.5166015625) and add it to both sides.

Add '0.5166015625' to each side of the equation.
1.4375t + 0.5166015625 + t2 = 6.25 + 0.5166015625

Reorder the terms:
0.5166015625 + 1.4375t + t2 = 6.25 + 0.5166015625

Combine like terms: 6.25 + 0.5166015625 = 6.7666015625
0.5166015625 + 1.4375t + t2 = 6.7666015625

Factor a perfect square on the left side:
(t + 0.71875)(t + 0.71875) = 6.7666015625

Calculate the square root of the right side: 2.601269221

Break this problem into two subproblems by setting 
(t + 0.71875) equal to 2.601269221 and -2.601269221.

Subproblem 1

t + 0.71875 = 2.601269221 Simplifying t + 0.71875 = 2.601269221 Reorder the terms: 0.71875 + t = 2.601269221 Solving 0.71875 + t = 2.601269221 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.71875' to each side of the equation. 0.71875 + -0.71875 + t = 2.601269221 + -0.71875 Combine like terms: 0.71875 + -0.71875 = 0.00000 0.00000 + t = 2.601269221 + -0.71875 t = 2.601269221 + -0.71875 Combine like terms: 2.601269221 + -0.71875 = 1.882519221 t = 1.882519221 Simplifying t = 1.882519221

Subproblem 2

t + 0.71875 = -2.601269221 Simplifying t + 0.71875 = -2.601269221 Reorder the terms: 0.71875 + t = -2.601269221 Solving 0.71875 + t = -2.601269221 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.71875' to each side of the equation. 0.71875 + -0.71875 + t = -2.601269221 + -0.71875 Combine like terms: 0.71875 + -0.71875 = 0.00000 0.00000 + t = -2.601269221 + -0.71875 t = -2.601269221 + -0.71875 Combine like terms: -2.601269221 + -0.71875 = -3.320019221 t = -3.320019221 Simplifying t = -3.320019221

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.882519221, -3.320019221}

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