2y^2+5y=-20.50

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Solution for 2y^2+5y=-20.50 equation:


Simplifying
2y2 + 5y = -20.50

Reorder the terms:
5y + 2y2 = -20.50

Solving
5y + 2y2 = -20.50

Solving for variable 'y'.

Reorder the terms:
20.50 + 5y + 2y2 = -20.50 + 20.50

Combine like terms: -20.50 + 20.50 = 0.00
20.50 + 5y + 2y2 = 0.00

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

Divide each side by '2'.
10.25 + 2.5y + y2 = 0.00

Move the constant term to the right:

Add '-10.25' to each side of the equation.
10.25 + 2.5y + -10.25 + y2 = 0.00 + -10.25

Reorder the terms:
10.25 + -10.25 + 2.5y + y2 = 0.00 + -10.25

Combine like terms: 10.25 + -10.25 = 0.00
0.00 + 2.5y + y2 = 0.00 + -10.25
2.5y + y2 = 0.00 + -10.25

Combine like terms: 0.00 + -10.25 = -10.25
2.5y + y2 = -10.25

The y term is 2.5y.  Take half its coefficient (1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
2.5y + 1.5625 + y2 = -10.25 + 1.5625

Reorder the terms:
1.5625 + 2.5y + y2 = -10.25 + 1.5625

Combine like terms: -10.25 + 1.5625 = -8.6875
1.5625 + 2.5y + y2 = -8.6875

Factor a perfect square on the left side:
(y + 1.25)(y + 1.25) = -8.6875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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