121x^2-64x+40=0

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Solution for 121x^2-64x+40=0 equation: 


Simplifying
121x2 + -64x + 40 = 0

Reorder the terms:
40 + -64x + 121x2 = 0

Solving
40 + -64x + 121x2 = 0

Solving for variable 'x'.

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

Divide each side by '121'.
0.3305785124 + -0.5289256198x + x2 = 0

Move the constant term to the right:

Add '-0.3305785124' to each side of the equation.
0.3305785124 + -0.5289256198x + -0.3305785124 + x2 = 0 + -0.3305785124

Reorder the terms:
0.3305785124 + -0.3305785124 + -0.5289256198x + x2 = 0 + -0.3305785124

Combine like terms: 0.3305785124 + -0.3305785124 = 0.0000000000
0.0000000000 + -0.5289256198x + x2 = 0 + -0.3305785124
-0.5289256198x + x2 = 0 + -0.3305785124

Combine like terms: 0 + -0.3305785124 = -0.3305785124
-0.5289256198x + x2 = -0.3305785124

The x term is -0.5289256198x.  Take half its coefficient (-0.2644628099).
Square it (0.06994057782) and add it to both sides.

Add '0.06994057782' to each side of the equation.
-0.5289256198x + 0.06994057782 + x2 = -0.3305785124 + 0.06994057782

Reorder the terms:
0.06994057782 + -0.5289256198x + x2 = -0.3305785124 + 0.06994057782

Combine like terms: -0.3305785124 + 0.06994057782 = -0.26063793458
0.06994057782 + -0.5289256198x + x2 = -0.26063793458

Factor a perfect square on the left side:
(x + -0.2644628099)(x + -0.2644628099) = -0.26063793458

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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