13y^2-32y+21=0

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Solution for 13y^2-32y+21=0 equation:


Simplifying
13y2 + -32y + 21 = 0

Reorder the terms:
21 + -32y + 13y2 = 0

Solving
21 + -32y + 13y2 = 0

Solving for variable 'y'.

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

Divide each side by '13'.
1.615384615 + -2.461538462y + y2 = 0

Move the constant term to the right:

Add '-1.615384615' to each side of the equation.
1.615384615 + -2.461538462y + -1.615384615 + y2 = 0 + -1.615384615

Reorder the terms:
1.615384615 + -1.615384615 + -2.461538462y + y2 = 0 + -1.615384615

Combine like terms: 1.615384615 + -1.615384615 = 0.000000000
0.000000000 + -2.461538462y + y2 = 0 + -1.615384615
-2.461538462y + y2 = 0 + -1.615384615

Combine like terms: 0 + -1.615384615 = -1.615384615
-2.461538462y + y2 = -1.615384615

The y term is -2.461538462y.  Take half its coefficient (-1.230769231).
Square it (1.514792900) and add it to both sides.

Add '1.514792900' to each side of the equation.
-2.461538462y + 1.514792900 + y2 = -1.615384615 + 1.514792900

Reorder the terms:
1.514792900 + -2.461538462y + y2 = -1.615384615 + 1.514792900

Combine like terms: -1.615384615 + 1.514792900 = -0.100591715
1.514792900 + -2.461538462y + y2 = -0.100591715

Factor a perfect square on the left side:
(y + -1.230769231)(y + -1.230769231) = -0.100591715

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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