-1y(-2y)+(2-1y)=

Solution for -1y(-2y)+(2-1y)= equation:

Simplifying
-1y(-2y) + (2 + -1y) = 0

Remove parenthesis around (-2y)
-1y * -2y + (2 + -1y) = 0

Reorder the terms for easier multiplication:
-1 * -2y * y + (2 + -1y) = 0

Multiply -1 * -2
2y * y + (2 + -1y) = 0

Multiply y * y
2y2 + (2 + -1y) = 0

Remove parenthesis around (2 + -1y)
2y2 + 2 + -1y = 0

Reorder the terms:
2 + -1y + 2y2 = 0

Solving
2 + -1y + 2y2 = 0

Solving for variable 'y'.

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

Divide each side by '2'.
1 + -0.5y + y2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -0.5y + -1 + y2 = 0 + -1

Reorder the terms:
1 + -1 + -0.5y + y2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -0.5y + y2 = 0 + -1
-0.5y + y2 = 0 + -1

Combine like terms: 0 + -1 = -1
-0.5y + y2 = -1

The y term is -0.5y.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5y + 0.0625 + y2 = -1 + 0.0625

Reorder the terms:
0.0625 + -0.5y + y2 = -1 + 0.0625

Combine like terms: -1 + 0.0625 = -0.9375
0.0625 + -0.5y + y2 = -0.9375

Factor a perfect square on the left side:
(y + -0.25)(y + -0.25) = -0.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.