3y-y-4=18y^2-9y+20

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Solution for 3y-y-4=18y^2-9y+20 equation:


Simplifying
3y + -1y + -4 = 18y2 + -9y + 20

Reorder the terms:
-4 + 3y + -1y = 18y2 + -9y + 20

Combine like terms: 3y + -1y = 2y
-4 + 2y = 18y2 + -9y + 20

Reorder the terms:
-4 + 2y = 20 + -9y + 18y2

Solving
-4 + 2y = 20 + -9y + 18y2

Solving for variable 'y'.

Reorder the terms:
-4 + -20 + 2y + 9y + -18y2 = 20 + -9y + 18y2 + -20 + 9y + -18y2

Combine like terms: -4 + -20 = -24
-24 + 2y + 9y + -18y2 = 20 + -9y + 18y2 + -20 + 9y + -18y2

Combine like terms: 2y + 9y = 11y
-24 + 11y + -18y2 = 20 + -9y + 18y2 + -20 + 9y + -18y2

Reorder the terms:
-24 + 11y + -18y2 = 20 + -20 + -9y + 9y + 18y2 + -18y2

Combine like terms: 20 + -20 = 0
-24 + 11y + -18y2 = 0 + -9y + 9y + 18y2 + -18y2
-24 + 11y + -18y2 = -9y + 9y + 18y2 + -18y2

Combine like terms: -9y + 9y = 0
-24 + 11y + -18y2 = 0 + 18y2 + -18y2
-24 + 11y + -18y2 = 18y2 + -18y2

Combine like terms: 18y2 + -18y2 = 0
-24 + 11y + -18y2 = 0

Begin completing the square.  Divide all terms by
-18 the coefficient of the squared term: 

Divide each side by '-18'.
1.333333333 + -0.6111111111y + y2 = 0

Move the constant term to the right:

Add '-1.333333333' to each side of the equation.
1.333333333 + -0.6111111111y + -1.333333333 + y2 = 0 + -1.333333333

Reorder the terms:
1.333333333 + -1.333333333 + -0.6111111111y + y2 = 0 + -1.333333333

Combine like terms: 1.333333333 + -1.333333333 = 0.000000000
0.000000000 + -0.6111111111y + y2 = 0 + -1.333333333
-0.6111111111y + y2 = 0 + -1.333333333

Combine like terms: 0 + -1.333333333 = -1.333333333
-0.6111111111y + y2 = -1.333333333

The y term is -0.6111111111y.  Take half its coefficient (-0.3055555556).
Square it (0.09336419756) and add it to both sides.

Add '0.09336419756' to each side of the equation.
-0.6111111111y + 0.09336419756 + y2 = -1.333333333 + 0.09336419756

Reorder the terms:
0.09336419756 + -0.6111111111y + y2 = -1.333333333 + 0.09336419756

Combine like terms: -1.333333333 + 0.09336419756 = -1.23996913544
0.09336419756 + -0.6111111111y + y2 = -1.23996913544

Factor a perfect square on the left side:
(y + -0.3055555556)(y + -0.3055555556) = -1.23996913544

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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