5y^2-28y+65=0

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Solution for 5y^2-28y+65=0 equation:


Simplifying
5y2 + -28y + 65 = 0

Reorder the terms:
65 + -28y + 5y2 = 0

Solving
65 + -28y + 5y2 = 0

Solving for variable 'y'.

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

Divide each side by '5'.
13 + -5.6y + y2 = 0

Move the constant term to the right:

Add '-13' to each side of the equation.
13 + -5.6y + -13 + y2 = 0 + -13

Reorder the terms:
13 + -13 + -5.6y + y2 = 0 + -13

Combine like terms: 13 + -13 = 0
0 + -5.6y + y2 = 0 + -13
-5.6y + y2 = 0 + -13

Combine like terms: 0 + -13 = -13
-5.6y + y2 = -13

The y term is -5.6y.  Take half its coefficient (-2.8).
Square it (7.84) and add it to both sides.

Add '7.84' to each side of the equation.
-5.6y + 7.84 + y2 = -13 + 7.84

Reorder the terms:
7.84 + -5.6y + y2 = -13 + 7.84

Combine like terms: -13 + 7.84 = -5.16
7.84 + -5.6y + y2 = -5.16

Factor a perfect square on the left side:
(y + -2.8)(y + -2.8) = -5.16

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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