17=2t^2-2t

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Solution for 17=2t^2-2t equation:


Simplifying
17 = 2t2 + -2t

Reorder the terms:
17 = -2t + 2t2

Solving
17 = -2t + 2t2

Solving for variable 't'.

Reorder the terms:
17 + 2t + -2t2 = -2t + 2t + 2t2 + -2t2

Combine like terms: -2t + 2t = 0
17 + 2t + -2t2 = 0 + 2t2 + -2t2
17 + 2t + -2t2 = 2t2 + -2t2

Combine like terms: 2t2 + -2t2 = 0
17 + 2t + -2t2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-8.5 + -1t + t2 = 0

Move the constant term to the right:

Add '8.5' to each side of the equation.
-8.5 + -1t + 8.5 + t2 = 0 + 8.5

Reorder the terms:
-8.5 + 8.5 + -1t + t2 = 0 + 8.5

Combine like terms: -8.5 + 8.5 = 0.0
0.0 + -1t + t2 = 0 + 8.5
-1t + t2 = 0 + 8.5

Combine like terms: 0 + 8.5 = 8.5
-1t + t2 = 8.5

The t term is -1t.  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.
-1t + 0.25 + t2 = 8.5 + 0.25

Reorder the terms:
0.25 + -1t + t2 = 8.5 + 0.25

Combine like terms: 8.5 + 0.25 = 8.75
0.25 + -1t + t2 = 8.75

Factor a perfect square on the left side:
(t + -0.5)(t + -0.5) = 8.75

Calculate the square root of the right side: 2.958039892

Break this problem into two subproblems by setting 
(t + -0.5) equal to 2.958039892 and -2.958039892.

Subproblem 1

t + -0.5 = 2.958039892 Simplifying t + -0.5 = 2.958039892 Reorder the terms: -0.5 + t = 2.958039892 Solving -0.5 + t = 2.958039892 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 = 2.958039892 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + t = 2.958039892 + 0.5 t = 2.958039892 + 0.5 Combine like terms: 2.958039892 + 0.5 = 3.458039892 t = 3.458039892 Simplifying t = 3.458039892

Subproblem 2

t + -0.5 = -2.958039892 Simplifying t + -0.5 = -2.958039892 Reorder the terms: -0.5 + t = -2.958039892 Solving -0.5 + t = -2.958039892 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 = -2.958039892 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + t = -2.958039892 + 0.5 t = -2.958039892 + 0.5 Combine like terms: -2.958039892 + 0.5 = -2.458039892 t = -2.458039892 Simplifying t = -2.458039892

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.458039892, -2.458039892}

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