0=1.4+11t-5t^2

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Solution for 0=1.4+11t-5t^2 equation:


Simplifying
0 = 1.4 + 11t + -5t2

Solving
0 = 1.4 + 11t + -5t2

Solving for variable 't'.

Combine like terms: 0 + -1.4 = -1.4
-1.4 + -11t + 5t2 = 1.4 + 11t + -5t2 + -1.4 + -11t + 5t2

Reorder the terms:
-1.4 + -11t + 5t2 = 1.4 + -1.4 + 11t + -11t + -5t2 + 5t2

Combine like terms: 1.4 + -1.4 = 0.0
-1.4 + -11t + 5t2 = 0.0 + 11t + -11t + -5t2 + 5t2
-1.4 + -11t + 5t2 = 11t + -11t + -5t2 + 5t2

Combine like terms: 11t + -11t = 0
-1.4 + -11t + 5t2 = 0 + -5t2 + 5t2
-1.4 + -11t + 5t2 = -5t2 + 5t2

Combine like terms: -5t2 + 5t2 = 0
-1.4 + -11t + 5t2 = 0

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

Divide each side by '5'.
-0.28 + -2.2t + t2 = 0

Move the constant term to the right:

Add '0.28' to each side of the equation.
-0.28 + -2.2t + 0.28 + t2 = 0 + 0.28

Reorder the terms:
-0.28 + 0.28 + -2.2t + t2 = 0 + 0.28

Combine like terms: -0.28 + 0.28 = 0.00
0.00 + -2.2t + t2 = 0 + 0.28
-2.2t + t2 = 0 + 0.28

Combine like terms: 0 + 0.28 = 0.28
-2.2t + t2 = 0.28

The t term is -2.2t.  Take half its coefficient (-1.1).
Square it (1.21) and add it to both sides.

Add '1.21' to each side of the equation.
-2.2t + 1.21 + t2 = 0.28 + 1.21

Reorder the terms:
1.21 + -2.2t + t2 = 0.28 + 1.21

Combine like terms: 0.28 + 1.21 = 1.49
1.21 + -2.2t + t2 = 1.49

Factor a perfect square on the left side:
(t + -1.1)(t + -1.1) = 1.49

Calculate the square root of the right side: 1.220655562

Break this problem into two subproblems by setting 
(t + -1.1) equal to 1.220655562 and -1.220655562.

Subproblem 1

t + -1.1 = 1.220655562 Simplifying t + -1.1 = 1.220655562 Reorder the terms: -1.1 + t = 1.220655562 Solving -1.1 + t = 1.220655562 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.1' to each side of the equation. -1.1 + 1.1 + t = 1.220655562 + 1.1 Combine like terms: -1.1 + 1.1 = 0.0 0.0 + t = 1.220655562 + 1.1 t = 1.220655562 + 1.1 Combine like terms: 1.220655562 + 1.1 = 2.320655562 t = 2.320655562 Simplifying t = 2.320655562

Subproblem 2

t + -1.1 = -1.220655562 Simplifying t + -1.1 = -1.220655562 Reorder the terms: -1.1 + t = -1.220655562 Solving -1.1 + t = -1.220655562 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.1' to each side of the equation. -1.1 + 1.1 + t = -1.220655562 + 1.1 Combine like terms: -1.1 + 1.1 = 0.0 0.0 + t = -1.220655562 + 1.1 t = -1.220655562 + 1.1 Combine like terms: -1.220655562 + 1.1 = -0.120655562 t = -0.120655562 Simplifying t = -0.120655562

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.320655562, -0.120655562}

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