-16t^2+35t+15=0

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Solution for -16t^2+35t+15=0 equation:


Simplifying
-16t2 + 35t + 15 = 0

Reorder the terms:
15 + 35t + -16t2 = 0

Solving
15 + 35t + -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 + -2.1875t + t2 = 0

Move the constant term to the right:

Add '0.9375' to each side of the equation.
-0.9375 + -2.1875t + 0.9375 + t2 = 0 + 0.9375

Reorder the terms:
-0.9375 + 0.9375 + -2.1875t + t2 = 0 + 0.9375

Combine like terms: -0.9375 + 0.9375 = 0.0000
0.0000 + -2.1875t + t2 = 0 + 0.9375
-2.1875t + t2 = 0 + 0.9375

Combine like terms: 0 + 0.9375 = 0.9375
-2.1875t + t2 = 0.9375

The t term is -2.1875t.  Take half its coefficient (-1.09375).
Square it (1.196289063) and add it to both sides.

Add '1.196289063' to each side of the equation.
-2.1875t + 1.196289063 + t2 = 0.9375 + 1.196289063

Reorder the terms:
1.196289063 + -2.1875t + t2 = 0.9375 + 1.196289063

Combine like terms: 0.9375 + 1.196289063 = 2.133789063
1.196289063 + -2.1875t + t2 = 2.133789063

Factor a perfect square on the left side:
(t + -1.09375)(t + -1.09375) = 2.133789063

Calculate the square root of the right side: 1.460749487

Break this problem into two subproblems by setting 
(t + -1.09375) equal to 1.460749487 and -1.460749487.

Subproblem 1

t + -1.09375 = 1.460749487 Simplifying t + -1.09375 = 1.460749487 Reorder the terms: -1.09375 + t = 1.460749487 Solving -1.09375 + t = 1.460749487 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.09375' to each side of the equation. -1.09375 + 1.09375 + t = 1.460749487 + 1.09375 Combine like terms: -1.09375 + 1.09375 = 0.00000 0.00000 + t = 1.460749487 + 1.09375 t = 1.460749487 + 1.09375 Combine like terms: 1.460749487 + 1.09375 = 2.554499487 t = 2.554499487 Simplifying t = 2.554499487

Subproblem 2

t + -1.09375 = -1.460749487 Simplifying t + -1.09375 = -1.460749487 Reorder the terms: -1.09375 + t = -1.460749487 Solving -1.09375 + t = -1.460749487 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.09375' to each side of the equation. -1.09375 + 1.09375 + t = -1.460749487 + 1.09375 Combine like terms: -1.09375 + 1.09375 = 0.00000 0.00000 + t = -1.460749487 + 1.09375 t = -1.460749487 + 1.09375 Combine like terms: -1.460749487 + 1.09375 = -0.366999487 t = -0.366999487 Simplifying t = -0.366999487

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.554499487, -0.366999487}

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