5y^2-9y=-7y-5

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Solution for 5y^2-9y=-7y-5 equation:


Simplifying
5y2 + -9y = -7y + -5

Reorder the terms:
-9y + 5y2 = -7y + -5

Reorder the terms:
-9y + 5y2 = -5 + -7y

Solving
-9y + 5y2 = -5 + -7y

Solving for variable 'y'.

Reorder the terms:
5 + -9y + 7y + 5y2 = -5 + -7y + 5 + 7y

Combine like terms: -9y + 7y = -2y
5 + -2y + 5y2 = -5 + -7y + 5 + 7y

Reorder the terms:
5 + -2y + 5y2 = -5 + 5 + -7y + 7y

Combine like terms: -5 + 5 = 0
5 + -2y + 5y2 = 0 + -7y + 7y
5 + -2y + 5y2 = -7y + 7y

Combine like terms: -7y + 7y = 0
5 + -2y + 5y2 = 0

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

Divide each side by '5'.
1 + -0.4y + y2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -0.4y + -1 + y2 = 0 + -1

Reorder the terms:
1 + -1 + -0.4y + y2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -0.4y + y2 = 0 + -1
-0.4y + y2 = 0 + -1

Combine like terms: 0 + -1 = -1
-0.4y + y2 = -1

The y term is -0.4y.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4y + 0.04 + y2 = -1 + 0.04

Reorder the terms:
0.04 + -0.4y + y2 = -1 + 0.04

Combine like terms: -1 + 0.04 = -0.96
0.04 + -0.4y + y2 = -0.96

Factor a perfect square on the left side:
(y + -0.2)(y + -0.2) = -0.96

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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