20=5t^2+30t+1

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Solution for 20=5t^2+30t+1 equation:


Simplifying
20 = 5t2 + 30t + 1

Reorder the terms:
20 = 1 + 30t + 5t2

Solving
20 = 1 + 30t + 5t2

Solving for variable 't'.

Combine like terms: 20 + -1 = 19
19 + -30t + -5t2 = 1 + 30t + 5t2 + -1 + -30t + -5t2

Reorder the terms:
19 + -30t + -5t2 = 1 + -1 + 30t + -30t + 5t2 + -5t2

Combine like terms: 1 + -1 = 0
19 + -30t + -5t2 = 0 + 30t + -30t + 5t2 + -5t2
19 + -30t + -5t2 = 30t + -30t + 5t2 + -5t2

Combine like terms: 30t + -30t = 0
19 + -30t + -5t2 = 0 + 5t2 + -5t2
19 + -30t + -5t2 = 5t2 + -5t2

Combine like terms: 5t2 + -5t2 = 0
19 + -30t + -5t2 = 0

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
-3.8 + 6t + t2 = 0

Move the constant term to the right:

Add '3.8' to each side of the equation.
-3.8 + 6t + 3.8 + t2 = 0 + 3.8

Reorder the terms:
-3.8 + 3.8 + 6t + t2 = 0 + 3.8

Combine like terms: -3.8 + 3.8 = 0.0
0.0 + 6t + t2 = 0 + 3.8
6t + t2 = 0 + 3.8

Combine like terms: 0 + 3.8 = 3.8
6t + t2 = 3.8

The t term is 6t.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6t + 9 + t2 = 3.8 + 9

Reorder the terms:
9 + 6t + t2 = 3.8 + 9

Combine like terms: 3.8 + 9 = 12.8
9 + 6t + t2 = 12.8

Factor a perfect square on the left side:
(t + 3)(t + 3) = 12.8

Calculate the square root of the right side: 3.577708764

Break this problem into two subproblems by setting 
(t + 3) equal to 3.577708764 and -3.577708764.

Subproblem 1

t + 3 = 3.577708764 Simplifying t + 3 = 3.577708764 Reorder the terms: 3 + t = 3.577708764 Solving 3 + t = 3.577708764 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + t = 3.577708764 + -3 Combine like terms: 3 + -3 = 0 0 + t = 3.577708764 + -3 t = 3.577708764 + -3 Combine like terms: 3.577708764 + -3 = 0.577708764 t = 0.577708764 Simplifying t = 0.577708764

Subproblem 2

t + 3 = -3.577708764 Simplifying t + 3 = -3.577708764 Reorder the terms: 3 + t = -3.577708764 Solving 3 + t = -3.577708764 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + t = -3.577708764 + -3 Combine like terms: 3 + -3 = 0 0 + t = -3.577708764 + -3 t = -3.577708764 + -3 Combine like terms: -3.577708764 + -3 = -6.577708764 t = -6.577708764 Simplifying t = -6.577708764

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.577708764, -6.577708764}

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