4u^2-33u+81=0

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Solution for 4u^2-33u+81=0 equation:


Simplifying
4u2 + -33u + 81 = 0

Reorder the terms:
81 + -33u + 4u2 = 0

Solving
81 + -33u + 4u2 = 0

Solving for variable 'u'.

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

Divide each side by '4'.
20.25 + -8.25u + u2 = 0

Move the constant term to the right:

Add '-20.25' to each side of the equation.
20.25 + -8.25u + -20.25 + u2 = 0 + -20.25

Reorder the terms:
20.25 + -20.25 + -8.25u + u2 = 0 + -20.25

Combine like terms: 20.25 + -20.25 = 0.00
0.00 + -8.25u + u2 = 0 + -20.25
-8.25u + u2 = 0 + -20.25

Combine like terms: 0 + -20.25 = -20.25
-8.25u + u2 = -20.25

The u term is -8.25u.  Take half its coefficient (-4.125).
Square it (17.015625) and add it to both sides.

Add '17.015625' to each side of the equation.
-8.25u + 17.015625 + u2 = -20.25 + 17.015625

Reorder the terms:
17.015625 + -8.25u + u2 = -20.25 + 17.015625

Combine like terms: -20.25 + 17.015625 = -3.234375
17.015625 + -8.25u + u2 = -3.234375

Factor a perfect square on the left side:
(u + -4.125)(u + -4.125) = -3.234375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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