y^2-.6y+.4=0

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Solution for y^2-.6y+.4=0 equation:


Simplifying
y2 + -0.6y + 0.4 = 0

Reorder the terms:
0.4 + -0.6y + y2 = 0

Solving
0.4 + -0.6y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '-0.4' to each side of the equation.
0.4 + -0.6y + -0.4 + y2 = 0 + -0.4

Reorder the terms:
0.4 + -0.4 + -0.6y + y2 = 0 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + -0.6y + y2 = 0 + -0.4
-0.6y + y2 = 0 + -0.4

Combine like terms: 0 + -0.4 = -0.4
-0.6y + y2 = -0.4

The y term is -0.6y.  Take half its coefficient (-0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
-0.6y + 0.09 + y2 = -0.4 + 0.09

Reorder the terms:
0.09 + -0.6y + y2 = -0.4 + 0.09

Combine like terms: -0.4 + 0.09 = -0.31
0.09 + -0.6y + y2 = -0.31

Factor a perfect square on the left side:
(y + -0.3)(y + -0.3) = -0.31

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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