1.23=2t-5t^2

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Solution for 1.23=2t-5t^2 equation:


Simplifying
1.23 = 2t + -5t2

Solving
1.23 = 2t + -5t2

Solving for variable 't'.

Reorder the terms:
1.23 + -2t + 5t2 = 2t + -2t + -5t2 + 5t2

Combine like terms: 2t + -2t = 0
1.23 + -2t + 5t2 = 0 + -5t2 + 5t2
1.23 + -2t + 5t2 = -5t2 + 5t2

Combine like terms: -5t2 + 5t2 = 0
1.23 + -2t + 5t2 = 0

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

Divide each side by '5'.
0.246 + -0.4t + t2 = 0

Move the constant term to the right:

Add '-0.246' to each side of the equation.
0.246 + -0.4t + -0.246 + t2 = 0 + -0.246

Reorder the terms:
0.246 + -0.246 + -0.4t + t2 = 0 + -0.246

Combine like terms: 0.246 + -0.246 = 0.000
0.000 + -0.4t + t2 = 0 + -0.246
-0.4t + t2 = 0 + -0.246

Combine like terms: 0 + -0.246 = -0.246
-0.4t + t2 = -0.246

The t term is -0.4t.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4t + 0.04 + t2 = -0.246 + 0.04

Reorder the terms:
0.04 + -0.4t + t2 = -0.246 + 0.04

Combine like terms: -0.246 + 0.04 = -0.206
0.04 + -0.4t + t2 = -0.206

Factor a perfect square on the left side:
(t + -0.2)(t + -0.2) = -0.206

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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