0.45t^2-2t+1=0

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Solution for 0.45t^2-2t+1=0 equation:


Simplifying
0.45t2 + -2t + 1 = 0

Reorder the terms:
1 + -2t + 0.45t2 = 0

Solving
1 + -2t + 0.45t2 = 0

Solving for variable 't'.

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

Divide each side by '0.45'.
2.222222222 + -4.444444444t + t2 = 0

Move the constant term to the right:

Add '-2.222222222' to each side of the equation.
2.222222222 + -4.444444444t + -2.222222222 + t2 = 0 + -2.222222222

Reorder the terms:
2.222222222 + -2.222222222 + -4.444444444t + t2 = 0 + -2.222222222

Combine like terms: 2.222222222 + -2.222222222 = 0.000000000
0.000000000 + -4.444444444t + t2 = 0 + -2.222222222
-4.444444444t + t2 = 0 + -2.222222222

Combine like terms: 0 + -2.222222222 = -2.222222222
-4.444444444t + t2 = -2.222222222

The t term is -4.444444444t.  Take half its coefficient (-2.222222222).
Square it (4.938271604) and add it to both sides.

Add '4.938271604' to each side of the equation.
-4.444444444t + 4.938271604 + t2 = -2.222222222 + 4.938271604

Reorder the terms:
4.938271604 + -4.444444444t + t2 = -2.222222222 + 4.938271604

Combine like terms: -2.222222222 + 4.938271604 = 2.716049382
4.938271604 + -4.444444444t + t2 = 2.716049382

Factor a perfect square on the left side:
(t + -2.222222222)(t + -2.222222222) = 2.716049382

Calculate the square root of the right side: 1.648044108

Break this problem into two subproblems by setting 
(t + -2.222222222) equal to 1.648044108 and -1.648044108.

Subproblem 1

t + -2.222222222 = 1.648044108 Simplifying t + -2.222222222 = 1.648044108 Reorder the terms: -2.222222222 + t = 1.648044108 Solving -2.222222222 + t = 1.648044108 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.222222222' to each side of the equation. -2.222222222 + 2.222222222 + t = 1.648044108 + 2.222222222 Combine like terms: -2.222222222 + 2.222222222 = 0.000000000 0.000000000 + t = 1.648044108 + 2.222222222 t = 1.648044108 + 2.222222222 Combine like terms: 1.648044108 + 2.222222222 = 3.87026633 t = 3.87026633 Simplifying t = 3.87026633

Subproblem 2

t + -2.222222222 = -1.648044108 Simplifying t + -2.222222222 = -1.648044108 Reorder the terms: -2.222222222 + t = -1.648044108 Solving -2.222222222 + t = -1.648044108 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.222222222' to each side of the equation. -2.222222222 + 2.222222222 + t = -1.648044108 + 2.222222222 Combine like terms: -2.222222222 + 2.222222222 = 0.000000000 0.000000000 + t = -1.648044108 + 2.222222222 t = -1.648044108 + 2.222222222 Combine like terms: -1.648044108 + 2.222222222 = 0.574178114 t = 0.574178114 Simplifying t = 0.574178114

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.87026633, 0.574178114}

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