-16t^2+15t+12=0

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Solution for -16t^2+15t+12=0 equation:


Simplifying
-16t2 + 15t + 12 = 0

Reorder the terms:
12 + 15t + -16t2 = 0

Solving
12 + 15t + -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'.
-0.75 + -0.9375t + t2 = 0

Move the constant term to the right:

Add '0.75' to each side of the equation.
-0.75 + -0.9375t + 0.75 + t2 = 0 + 0.75

Reorder the terms:
-0.75 + 0.75 + -0.9375t + t2 = 0 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + -0.9375t + t2 = 0 + 0.75
-0.9375t + t2 = 0 + 0.75

Combine like terms: 0 + 0.75 = 0.75
-0.9375t + t2 = 0.75

The t term is -0.9375t.  Take half its coefficient (-0.46875).
Square it (0.2197265625) and add it to both sides.

Add '0.2197265625' to each side of the equation.
-0.9375t + 0.2197265625 + t2 = 0.75 + 0.2197265625

Reorder the terms:
0.2197265625 + -0.9375t + t2 = 0.75 + 0.2197265625

Combine like terms: 0.75 + 0.2197265625 = 0.9697265625
0.2197265625 + -0.9375t + t2 = 0.9697265625

Factor a perfect square on the left side:
(t + -0.46875)(t + -0.46875) = 0.9697265625

Calculate the square root of the right side: 0.984746954

Break this problem into two subproblems by setting 
(t + -0.46875) equal to 0.984746954 and -0.984746954.

Subproblem 1

t + -0.46875 = 0.984746954 Simplifying t + -0.46875 = 0.984746954 Reorder the terms: -0.46875 + t = 0.984746954 Solving -0.46875 + t = 0.984746954 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.46875' to each side of the equation. -0.46875 + 0.46875 + t = 0.984746954 + 0.46875 Combine like terms: -0.46875 + 0.46875 = 0.00000 0.00000 + t = 0.984746954 + 0.46875 t = 0.984746954 + 0.46875 Combine like terms: 0.984746954 + 0.46875 = 1.453496954 t = 1.453496954 Simplifying t = 1.453496954

Subproblem 2

t + -0.46875 = -0.984746954 Simplifying t + -0.46875 = -0.984746954 Reorder the terms: -0.46875 + t = -0.984746954 Solving -0.46875 + t = -0.984746954 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.46875' to each side of the equation. -0.46875 + 0.46875 + t = -0.984746954 + 0.46875 Combine like terms: -0.46875 + 0.46875 = 0.00000 0.00000 + t = -0.984746954 + 0.46875 t = -0.984746954 + 0.46875 Combine like terms: -0.984746954 + 0.46875 = -0.515996954 t = -0.515996954 Simplifying t = -0.515996954

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.453496954, -0.515996954}

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