2t^2+19t+5=0

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Solution for 2t^2+19t+5=0 equation:


Simplifying
2t2 + 19t + 5 = 0

Reorder the terms:
5 + 19t + 2t2 = 0

Solving
5 + 19t + 2t2 = 0

Solving for variable 't'.

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

Divide each side by '2'.
2.5 + 9.5t + t2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + 9.5t + -2.5 + t2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + 9.5t + t2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + 9.5t + t2 = 0 + -2.5
9.5t + t2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
9.5t + t2 = -2.5

The t term is 9.5t.  Take half its coefficient (4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
9.5t + 22.5625 + t2 = -2.5 + 22.5625

Reorder the terms:
22.5625 + 9.5t + t2 = -2.5 + 22.5625

Combine like terms: -2.5 + 22.5625 = 20.0625
22.5625 + 9.5t + t2 = 20.0625

Factor a perfect square on the left side:
(t + 4.75)(t + 4.75) = 20.0625

Calculate the square root of the right side: 4.479118217

Break this problem into two subproblems by setting 
(t + 4.75) equal to 4.479118217 and -4.479118217.

Subproblem 1

t + 4.75 = 4.479118217 Simplifying t + 4.75 = 4.479118217 Reorder the terms: 4.75 + t = 4.479118217 Solving 4.75 + t = 4.479118217 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-4.75' to each side of the equation. 4.75 + -4.75 + t = 4.479118217 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + t = 4.479118217 + -4.75 t = 4.479118217 + -4.75 Combine like terms: 4.479118217 + -4.75 = -0.270881783 t = -0.270881783 Simplifying t = -0.270881783

Subproblem 2

t + 4.75 = -4.479118217 Simplifying t + 4.75 = -4.479118217 Reorder the terms: 4.75 + t = -4.479118217 Solving 4.75 + t = -4.479118217 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-4.75' to each side of the equation. 4.75 + -4.75 + t = -4.479118217 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + t = -4.479118217 + -4.75 t = -4.479118217 + -4.75 Combine like terms: -4.479118217 + -4.75 = -9.229118217 t = -9.229118217 Simplifying t = -9.229118217

Solution

The solution to the problem is based on the solutions from the subproblems. t = {-0.270881783, -9.229118217}

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