=2t^2-84t+1025

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Solution for =2t^2-84t+1025 equation:


Simplifying
0 = 2t2 + -84t + 1025

Reorder the terms:
0 = 1025 + -84t + 2t2

Solving
0 = 1025 + -84t + 2t2

Solving for variable 't'.

Combine like terms: 0 + -1025 = -1025
-1025 + 84t + -2t2 = 1025 + -84t + 2t2 + -1025 + 84t + -2t2

Reorder the terms:
-1025 + 84t + -2t2 = 1025 + -1025 + -84t + 84t + 2t2 + -2t2

Combine like terms: 1025 + -1025 = 0
-1025 + 84t + -2t2 = 0 + -84t + 84t + 2t2 + -2t2
-1025 + 84t + -2t2 = -84t + 84t + 2t2 + -2t2

Combine like terms: -84t + 84t = 0
-1025 + 84t + -2t2 = 0 + 2t2 + -2t2
-1025 + 84t + -2t2 = 2t2 + -2t2

Combine like terms: 2t2 + -2t2 = 0
-1025 + 84t + -2t2 = 0

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

Divide each side by '-2'.
512.5 + -42t + t2 = 0

Move the constant term to the right:

Add '-512.5' to each side of the equation.
512.5 + -42t + -512.5 + t2 = 0 + -512.5

Reorder the terms:
512.5 + -512.5 + -42t + t2 = 0 + -512.5

Combine like terms: 512.5 + -512.5 = 0.0
0.0 + -42t + t2 = 0 + -512.5
-42t + t2 = 0 + -512.5

Combine like terms: 0 + -512.5 = -512.5
-42t + t2 = -512.5

The t term is -42t.  Take half its coefficient (-21).
Square it (441) and add it to both sides.

Add '441' to each side of the equation.
-42t + 441 + t2 = -512.5 + 441

Reorder the terms:
441 + -42t + t2 = -512.5 + 441

Combine like terms: -512.5 + 441 = -71.5
441 + -42t + t2 = -71.5

Factor a perfect square on the left side:
(t + -21)(t + -21) = -71.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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