y^2+y=-1.25

Solution for y^2+y=-1.25 equation:

Simplifying
y2 + y = -1.25

Reorder the terms:
y + y2 = -1.25

Solving
y + y2 = -1.25

Solving for variable 'y'.

Reorder the terms:
1.25 + y + y2 = -1.25 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
1.25 + y + y2 = 0.00

Begin completing the square.

Move the constant term to the right:

Add '-1.25' to each side of the equation.
1.25 + y + -1.25 + y2 = 0.00 + -1.25

Reorder the terms:
1.25 + -1.25 + y + y2 = 0.00 + -1.25

Combine like terms: 1.25 + -1.25 = 0.00
0.00 + y + y2 = 0.00 + -1.25
y + y2 = 0.00 + -1.25

Combine like terms: 0.00 + -1.25 = -1.25
y + y2 = -1.25

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

Add '0.25' to each side of the equation.
y + 0.25 + y2 = -1.25 + 0.25

Reorder the terms:
0.25 + y + y2 = -1.25 + 0.25

Combine like terms: -1.25 + 0.25 = -1
0.25 + y + y2 = -1

Factor a perfect square on the left side:
(y + 0.5)(y + 0.5) = -1

Can't calculate square root of the right side.

The solution to this equation could not be determined.