16t^2-46t-9=0

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Solution for 16t^2-46t-9=0 equation:


Simplifying
16t2 + -46t + -9 = 0

Reorder the terms:
-9 + -46t + 16t2 = 0

Solving
-9 + -46t + 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'.
-0.5625 + -2.875t + t2 = 0

Move the constant term to the right:

Add '0.5625' to each side of the equation.
-0.5625 + -2.875t + 0.5625 + t2 = 0 + 0.5625

Reorder the terms:
-0.5625 + 0.5625 + -2.875t + t2 = 0 + 0.5625

Combine like terms: -0.5625 + 0.5625 = 0.0000
0.0000 + -2.875t + t2 = 0 + 0.5625
-2.875t + t2 = 0 + 0.5625

Combine like terms: 0 + 0.5625 = 0.5625
-2.875t + t2 = 0.5625

The t term is -2.875t.  Take half its coefficient (-1.4375).
Square it (2.06640625) and add it to both sides.

Add '2.06640625' to each side of the equation.
-2.875t + 2.06640625 + t2 = 0.5625 + 2.06640625

Reorder the terms:
2.06640625 + -2.875t + t2 = 0.5625 + 2.06640625

Combine like terms: 0.5625 + 2.06640625 = 2.62890625
2.06640625 + -2.875t + t2 = 2.62890625

Factor a perfect square on the left side:
(t + -1.4375)(t + -1.4375) = 2.62890625

Calculate the square root of the right side: 1.621390221

Break this problem into two subproblems by setting 
(t + -1.4375) equal to 1.621390221 and -1.621390221.

Subproblem 1

t + -1.4375 = 1.621390221 Simplifying t + -1.4375 = 1.621390221 Reorder the terms: -1.4375 + t = 1.621390221 Solving -1.4375 + t = 1.621390221 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.4375' to each side of the equation. -1.4375 + 1.4375 + t = 1.621390221 + 1.4375 Combine like terms: -1.4375 + 1.4375 = 0.0000 0.0000 + t = 1.621390221 + 1.4375 t = 1.621390221 + 1.4375 Combine like terms: 1.621390221 + 1.4375 = 3.058890221 t = 3.058890221 Simplifying t = 3.058890221

Subproblem 2

t + -1.4375 = -1.621390221 Simplifying t + -1.4375 = -1.621390221 Reorder the terms: -1.4375 + t = -1.621390221 Solving -1.4375 + t = -1.621390221 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.4375' to each side of the equation. -1.4375 + 1.4375 + t = -1.621390221 + 1.4375 Combine like terms: -1.4375 + 1.4375 = 0.0000 0.0000 + t = -1.621390221 + 1.4375 t = -1.621390221 + 1.4375 Combine like terms: -1.621390221 + 1.4375 = -0.183890221 t = -0.183890221 Simplifying t = -0.183890221

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.058890221, -0.183890221}

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