=t^2-2t+40

Solution for =t^2-2t+40 equation:

Simplifying
0 = t2 + -2t + 40

Reorder the terms:
0 = 40 + -2t + t2

Solving
0 = 40 + -2t + t2

Solving for variable 't'.

Combine like terms: 0 + -40 = -40
-40 + 2t + -1t2 = 40 + -2t + t2 + -40 + 2t + -1t2

Reorder the terms:
-40 + 2t + -1t2 = 40 + -40 + -2t + 2t + t2 + -1t2

Combine like terms: 40 + -40 = 0
-40 + 2t + -1t2 = 0 + -2t + 2t + t2 + -1t2
-40 + 2t + -1t2 = -2t + 2t + t2 + -1t2

Combine like terms: -2t + 2t = 0
-40 + 2t + -1t2 = 0 + t2 + -1t2
-40 + 2t + -1t2 = t2 + -1t2

Combine like terms: t2 + -1t2 = 0
-40 + 2t + -1t2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
40 + -2t + t2 = 0

Move the constant term to the right:

Add '-40' to each side of the equation.
40 + -2t + -40 + t2 = 0 + -40

Reorder the terms:
40 + -40 + -2t + t2 = 0 + -40

Combine like terms: 40 + -40 = 0
0 + -2t + t2 = 0 + -40
-2t + t2 = 0 + -40

Combine like terms: 0 + -40 = -40
-2t + t2 = -40

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 = -40 + 1

Reorder the terms:
1 + -2t + t2 = -40 + 1

Combine like terms: -40 + 1 = -39
1 + -2t + t2 = -39

Factor a perfect square on the left side:
(t + -1)(t + -1) = -39

Can't calculate square root of the right side.

The solution to this equation could not be determined.