-16t^2+36t+15=0

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Solution for -16t^2+36t+15=0 equation:


Simplifying
-16t2 + 36t + 15 = 0

Reorder the terms:
15 + 36t + -16t2 = 0

Solving
15 + 36t + -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'.
-0.9375 + -2.25t + t2 = 0

Move the constant term to the right:

Add '0.9375' to each side of the equation.
-0.9375 + -2.25t + 0.9375 + t2 = 0 + 0.9375

Reorder the terms:
-0.9375 + 0.9375 + -2.25t + t2 = 0 + 0.9375

Combine like terms: -0.9375 + 0.9375 = 0.0000
0.0000 + -2.25t + t2 = 0 + 0.9375
-2.25t + t2 = 0 + 0.9375

Combine like terms: 0 + 0.9375 = 0.9375
-2.25t + t2 = 0.9375

The t term is -2.25t.  Take half its coefficient (-1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
-2.25t + 1.265625 + t2 = 0.9375 + 1.265625

Reorder the terms:
1.265625 + -2.25t + t2 = 0.9375 + 1.265625

Combine like terms: 0.9375 + 1.265625 = 2.203125
1.265625 + -2.25t + t2 = 2.203125

Factor a perfect square on the left side:
(t + -1.125)(t + -1.125) = 2.203125

Calculate the square root of the right side: 1.484292761

Break this problem into two subproblems by setting 
(t + -1.125) equal to 1.484292761 and -1.484292761.

Subproblem 1

t + -1.125 = 1.484292761 Simplifying t + -1.125 = 1.484292761 Reorder the terms: -1.125 + t = 1.484292761 Solving -1.125 + t = 1.484292761 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.125' to each side of the equation. -1.125 + 1.125 + t = 1.484292761 + 1.125 Combine like terms: -1.125 + 1.125 = 0.000 0.000 + t = 1.484292761 + 1.125 t = 1.484292761 + 1.125 Combine like terms: 1.484292761 + 1.125 = 2.609292761 t = 2.609292761 Simplifying t = 2.609292761

Subproblem 2

t + -1.125 = -1.484292761 Simplifying t + -1.125 = -1.484292761 Reorder the terms: -1.125 + t = -1.484292761 Solving -1.125 + t = -1.484292761 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.125' to each side of the equation. -1.125 + 1.125 + t = -1.484292761 + 1.125 Combine like terms: -1.125 + 1.125 = 0.000 0.000 + t = -1.484292761 + 1.125 t = -1.484292761 + 1.125 Combine like terms: -1.484292761 + 1.125 = -0.359292761 t = -0.359292761 Simplifying t = -0.359292761

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.609292761, -0.359292761}

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