4.9x^2-4x+40=0

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Solution for 4.9x^2-4x+40=0 equation: 


Simplifying
4.9x2 + -4x + 40 = 0

Reorder the terms:
40 + -4x + 4.9x2 = 0

Solving
40 + -4x + 4.9x2 = 0

Solving for variable 'x'.

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

Divide each side by '4.9'.
8.163265306 + -0.8163265306x + x2 = 0

Move the constant term to the right:

Add '-8.163265306' to each side of the equation.
8.163265306 + -0.8163265306x + -8.163265306 + x2 = 0 + -8.163265306

Reorder the terms:
8.163265306 + -8.163265306 + -0.8163265306x + x2 = 0 + -8.163265306

Combine like terms: 8.163265306 + -8.163265306 = 0.000000000
0.000000000 + -0.8163265306x + x2 = 0 + -8.163265306
-0.8163265306x + x2 = 0 + -8.163265306

Combine like terms: 0 + -8.163265306 = -8.163265306
-0.8163265306x + x2 = -8.163265306

The x term is -0.8163265306x.  Take half its coefficient (-0.4081632653).
Square it (0.1665972511) and add it to both sides.

Add '0.1665972511' to each side of the equation.
-0.8163265306x + 0.1665972511 + x2 = -8.163265306 + 0.1665972511

Reorder the terms:
0.1665972511 + -0.8163265306x + x2 = -8.163265306 + 0.1665972511

Combine like terms: -8.163265306 + 0.1665972511 = -7.9966680549
0.1665972511 + -0.8163265306x + x2 = -7.9966680549

Factor a perfect square on the left side:
(x + -0.4081632653)(x + -0.4081632653) = -7.9966680549

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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