4.1t(t+1)=12.3

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Solution for 4.1t(t+1)=12.3 equation:


Simplifying
4.1t(t + 1) = 12.3

Reorder the terms:
4.1t(1 + t) = 12.3
(1 * 4.1t + t * 4.1t) = 12.3
(4.1t + 4.1t2) = 12.3

Solving
4.1t + 4.1t2 = 12.3

Solving for variable 't'.

Reorder the terms:
-12.3 + 4.1t + 4.1t2 = 12.3 + -12.3

Combine like terms: 12.3 + -12.3 = 0.0
-12.3 + 4.1t + 4.1t2 = 0.0

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

Divide each side by '4.1'.
-3 + t + t2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + t + 3 + t2 = 0 + 3

Reorder the terms:
-3 + 3 + t + t2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + t + t2 = 0 + 3
t + t2 = 0 + 3

Combine like terms: 0 + 3 = 3
t + t2 = 3

The t term is t.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + t2 = 3 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + t2 = 3 + 0.25

Combine like terms: 3 + 0.25 = 3.25
1.25 + t2 = 3.25

Factor a perfect square on the left side:
(t + 0.5)(t + 0.5) = 3.25

Calculate the square root of the right side: 1.802775638

Break this problem into two subproblems by setting 
(t + 0.5) equal to 1.802775638 and -1.802775638.

Subproblem 1

t + 0.5 = 1.802775638 Simplifying t + 0.5 = 1.802775638 Reorder the terms: 0.5 + t = 1.802775638 Solving 0.5 + t = 1.802775638 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = 1.802775638 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = 1.802775638 + -0.5 t = 1.802775638 + -0.5 Combine like terms: 1.802775638 + -0.5 = 1.302775638 t = 1.302775638 Simplifying t = 1.302775638

Subproblem 2

t + 0.5 = -1.802775638 Simplifying t + 0.5 = -1.802775638 Reorder the terms: 0.5 + t = -1.802775638 Solving 0.5 + t = -1.802775638 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = -1.802775638 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = -1.802775638 + -0.5 t = -1.802775638 + -0.5 Combine like terms: -1.802775638 + -0.5 = -2.302775638 t = -2.302775638 Simplifying t = -2.302775638

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.302775638, -2.302775638}

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