25y^2-10y+7=0

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Solution for 25y^2-10y+7=0 equation:


Simplifying
25y2 + -10y + 7 = 0

Reorder the terms:
7 + -10y + 25y2 = 0

Solving
7 + -10y + 25y2 = 0

Solving for variable 'y'.

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

Divide each side by '25'.
0.28 + -0.4y + y2 = 0

Move the constant term to the right:

Add '-0.28' to each side of the equation.
0.28 + -0.4y + -0.28 + y2 = 0 + -0.28

Reorder the terms:
0.28 + -0.28 + -0.4y + y2 = 0 + -0.28

Combine like terms: 0.28 + -0.28 = 0.00
0.00 + -0.4y + y2 = 0 + -0.28
-0.4y + y2 = 0 + -0.28

Combine like terms: 0 + -0.28 = -0.28
-0.4y + y2 = -0.28

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 = -0.28 + 0.04

Reorder the terms:
0.04 + -0.4y + y2 = -0.28 + 0.04

Combine like terms: -0.28 + 0.04 = -0.24
0.04 + -0.4y + y2 = -0.24

Factor a perfect square on the left side:
(y + -0.2)(y + -0.2) = -0.24

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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