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

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


Simplifying
0 = -16t2 + 15t + 2

Reorder the terms:
0 = 2 + 15t + -16t2

Solving
0 = 2 + 15t + -16t2

Solving for variable 't'.

Combine like terms: 0 + -2 = -2
-2 + -15t + 16t2 = 2 + 15t + -16t2 + -2 + -15t + 16t2

Reorder the terms:
-2 + -15t + 16t2 = 2 + -2 + 15t + -15t + -16t2 + 16t2

Combine like terms: 2 + -2 = 0
-2 + -15t + 16t2 = 0 + 15t + -15t + -16t2 + 16t2
-2 + -15t + 16t2 = 15t + -15t + -16t2 + 16t2

Combine like terms: 15t + -15t = 0
-2 + -15t + 16t2 = 0 + -16t2 + 16t2
-2 + -15t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
-2 + -15t + 16t2 = 0

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

Divide each side by '16'.
-0.125 + -0.9375t + t2 = 0

Move the constant term to the right:

Add '0.125' to each side of the equation.
-0.125 + -0.9375t + 0.125 + t2 = 0 + 0.125

Reorder the terms:
-0.125 + 0.125 + -0.9375t + t2 = 0 + 0.125

Combine like terms: -0.125 + 0.125 = 0.000
0.000 + -0.9375t + t2 = 0 + 0.125
-0.9375t + t2 = 0 + 0.125

Combine like terms: 0 + 0.125 = 0.125
-0.9375t + t2 = 0.125

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 = 0.125 + 0.2197265625

Reorder the terms:
0.2197265625 + -0.9375t + t2 = 0.125 + 0.2197265625

Combine like terms: 0.125 + 0.2197265625 = 0.3447265625
0.2197265625 + -0.9375t + t2 = 0.3447265625

Factor a perfect square on the left side:
(t + -0.46875)(t + -0.46875) = 0.3447265625

Calculate the square root of the right side: 0.587134195

Break this problem into two subproblems by setting 
(t + -0.46875) equal to 0.587134195 and -0.587134195.

Subproblem 1

t + -0.46875 = 0.587134195 Simplifying t + -0.46875 = 0.587134195 Reorder the terms: -0.46875 + t = 0.587134195 Solving -0.46875 + t = 0.587134195 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 = 0.587134195 + 0.46875 Combine like terms: -0.46875 + 0.46875 = 0.00000 0.00000 + t = 0.587134195 + 0.46875 t = 0.587134195 + 0.46875 Combine like terms: 0.587134195 + 0.46875 = 1.055884195 t = 1.055884195 Simplifying t = 1.055884195

Subproblem 2

t + -0.46875 = -0.587134195 Simplifying t + -0.46875 = -0.587134195 Reorder the terms: -0.46875 + t = -0.587134195 Solving -0.46875 + t = -0.587134195 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 = -0.587134195 + 0.46875 Combine like terms: -0.46875 + 0.46875 = 0.00000 0.00000 + t = -0.587134195 + 0.46875 t = -0.587134195 + 0.46875 Combine like terms: -0.587134195 + 0.46875 = -0.118384195 t = -0.118384195 Simplifying t = -0.118384195

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.055884195, -0.118384195}

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