169=55X-5X^2

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Solution for 169=55X-5X^2 equation:


Simplifying
169 = 55X + -5X2

Solving
169 = 55X + -5X2

Solving for variable 'X'.

Reorder the terms:
169 + -55X + 5X2 = 55X + -55X + -5X2 + 5X2

Combine like terms: 55X + -55X = 0
169 + -55X + 5X2 = 0 + -5X2 + 5X2
169 + -55X + 5X2 = -5X2 + 5X2

Combine like terms: -5X2 + 5X2 = 0
169 + -55X + 5X2 = 0

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

Divide each side by '5'.
33.8 + -11X + X2 = 0

Move the constant term to the right:

Add '-33.8' to each side of the equation.
33.8 + -11X + -33.8 + X2 = 0 + -33.8

Reorder the terms:
33.8 + -33.8 + -11X + X2 = 0 + -33.8

Combine like terms: 33.8 + -33.8 = 0.0
0.0 + -11X + X2 = 0 + -33.8
-11X + X2 = 0 + -33.8

Combine like terms: 0 + -33.8 = -33.8
-11X + X2 = -33.8

The X term is -11X.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11X + 30.25 + X2 = -33.8 + 30.25

Reorder the terms:
30.25 + -11X + X2 = -33.8 + 30.25

Combine like terms: -33.8 + 30.25 = -3.55
30.25 + -11X + X2 = -3.55

Factor a perfect square on the left side:
(X + -5.5)(X + -5.5) = -3.55

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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