4y^2-20y+43=0

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Solution for 4y^2-20y+43=0 equation:


Simplifying
4y2 + -20y + 43 = 0

Reorder the terms:
43 + -20y + 4y2 = 0

Solving
43 + -20y + 4y2 = 0

Solving for variable 'y'.

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

Divide each side by '4'.
10.75 + -5y + y2 = 0

Move the constant term to the right:

Add '-10.75' to each side of the equation.
10.75 + -5y + -10.75 + y2 = 0 + -10.75

Reorder the terms:
10.75 + -10.75 + -5y + y2 = 0 + -10.75

Combine like terms: 10.75 + -10.75 = 0.00
0.00 + -5y + y2 = 0 + -10.75
-5y + y2 = 0 + -10.75

Combine like terms: 0 + -10.75 = -10.75
-5y + y2 = -10.75

The y term is -5y.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5y + 6.25 + y2 = -10.75 + 6.25

Reorder the terms:
6.25 + -5y + y2 = -10.75 + 6.25

Combine like terms: -10.75 + 6.25 = -4.5
6.25 + -5y + y2 = -4.5

Factor a perfect square on the left side:
(y + -2.5)(y + -2.5) = -4.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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