25y^2-30y+2=0

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Solution for 25y^2-30y+2=0 equation:


Simplifying
25y2 + -30y + 2 = 0

Reorder the terms:
2 + -30y + 25y2 = 0

Solving
2 + -30y + 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'.
0.08 + -1.2y + y2 = 0

Move the constant term to the right:

Add '-0.08' to each side of the equation.
0.08 + -1.2y + -0.08 + y2 = 0 + -0.08

Reorder the terms:
0.08 + -0.08 + -1.2y + y2 = 0 + -0.08

Combine like terms: 0.08 + -0.08 = 0.00
0.00 + -1.2y + y2 = 0 + -0.08
-1.2y + y2 = 0 + -0.08

Combine like terms: 0 + -0.08 = -0.08
-1.2y + y2 = -0.08

The y term is -1.2y.  Take half its coefficient (-0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
-1.2y + 0.36 + y2 = -0.08 + 0.36

Reorder the terms:
0.36 + -1.2y + y2 = -0.08 + 0.36

Combine like terms: -0.08 + 0.36 = 0.28
0.36 + -1.2y + y2 = 0.28

Factor a perfect square on the left side:
(y + -0.6)(y + -0.6) = 0.28

Calculate the square root of the right side: 0.529150262

Break this problem into two subproblems by setting 
(y + -0.6) equal to 0.529150262 and -0.529150262.

Subproblem 1

y + -0.6 = 0.529150262 Simplifying y + -0.6 = 0.529150262 Reorder the terms: -0.6 + y = 0.529150262 Solving -0.6 + y = 0.529150262 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + y = 0.529150262 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + y = 0.529150262 + 0.6 y = 0.529150262 + 0.6 Combine like terms: 0.529150262 + 0.6 = 1.129150262 y = 1.129150262 Simplifying y = 1.129150262

Subproblem 2

y + -0.6 = -0.529150262 Simplifying y + -0.6 = -0.529150262 Reorder the terms: -0.6 + y = -0.529150262 Solving -0.6 + y = -0.529150262 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + y = -0.529150262 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + y = -0.529150262 + 0.6 y = -0.529150262 + 0.6 Combine like terms: -0.529150262 + 0.6 = 0.070849738 y = 0.070849738 Simplifying y = 0.070849738

Solution

The solution to the problem is based on the solutions from the subproblems. y = {1.129150262, 0.070849738}

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