4t^2-8t+3.6=0

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Solution for 4t^2-8t+3.6=0 equation:


Simplifying
4t2 + -8t + 3.6 = 0

Reorder the terms:
3.6 + -8t + 4t2 = 0

Solving
3.6 + -8t + 4t2 = 0

Solving for variable 't'.

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

Divide each side by '4'.
0.9 + -2t + t2 = 0

Move the constant term to the right:

Add '-0.9' to each side of the equation.
0.9 + -2t + -0.9 + t2 = 0 + -0.9

Reorder the terms:
0.9 + -0.9 + -2t + t2 = 0 + -0.9

Combine like terms: 0.9 + -0.9 = 0.0
0.0 + -2t + t2 = 0 + -0.9
-2t + t2 = 0 + -0.9

Combine like terms: 0 + -0.9 = -0.9
-2t + t2 = -0.9

The t term is -2t.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2t + 1 + t2 = -0.9 + 1

Reorder the terms:
1 + -2t + t2 = -0.9 + 1

Combine like terms: -0.9 + 1 = 0.1
1 + -2t + t2 = 0.1

Factor a perfect square on the left side:
(t + -1)(t + -1) = 0.1

Calculate the square root of the right side: 0.316227766

Break this problem into two subproblems by setting 
(t + -1) equal to 0.316227766 and -0.316227766.

Subproblem 1

t + -1 = 0.316227766 Simplifying t + -1 = 0.316227766 Reorder the terms: -1 + t = 0.316227766 Solving -1 + t = 0.316227766 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + t = 0.316227766 + 1 Combine like terms: -1 + 1 = 0 0 + t = 0.316227766 + 1 t = 0.316227766 + 1 Combine like terms: 0.316227766 + 1 = 1.316227766 t = 1.316227766 Simplifying t = 1.316227766

Subproblem 2

t + -1 = -0.316227766 Simplifying t + -1 = -0.316227766 Reorder the terms: -1 + t = -0.316227766 Solving -1 + t = -0.316227766 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + t = -0.316227766 + 1 Combine like terms: -1 + 1 = 0 0 + t = -0.316227766 + 1 t = -0.316227766 + 1 Combine like terms: -0.316227766 + 1 = 0.683772234 t = 0.683772234 Simplifying t = 0.683772234

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.316227766, 0.683772234}

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