18t^2+9t+20=0

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Solution for 18t^2+9t+20=0 equation:


Simplifying
18t2 + 9t + 20 = 0

Reorder the terms:
20 + 9t + 18t2 = 0

Solving
20 + 9t + 18t2 = 0

Solving for variable 't'.

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

Divide each side by '18'.
1.111111111 + 0.5t + t2 = 0

Move the constant term to the right:

Add '-1.111111111' to each side of the equation.
1.111111111 + 0.5t + -1.111111111 + t2 = 0 + -1.111111111

Reorder the terms:
1.111111111 + -1.111111111 + 0.5t + t2 = 0 + -1.111111111

Combine like terms: 1.111111111 + -1.111111111 = 0.000000000
0.000000000 + 0.5t + t2 = 0 + -1.111111111
0.5t + t2 = 0 + -1.111111111

Combine like terms: 0 + -1.111111111 = -1.111111111
0.5t + t2 = -1.111111111

The t term is 0.5t.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5t + 0.0625 + t2 = -1.111111111 + 0.0625

Reorder the terms:
0.0625 + 0.5t + t2 = -1.111111111 + 0.0625

Combine like terms: -1.111111111 + 0.0625 = -1.048611111
0.0625 + 0.5t + t2 = -1.048611111

Factor a perfect square on the left side:
(t + 0.25)(t + 0.25) = -1.048611111

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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