-10y^2-3y+3=0

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Solution for -10y^2-3y+3=0 equation:


Simplifying
-10y2 + -3y + 3 = 0

Reorder the terms:
3 + -3y + -10y2 = 0

Solving
3 + -3y + -10y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
-10 the coefficient of the squared term: 

Divide each side by '-10'.
-0.3 + 0.3y + y2 = 0

Move the constant term to the right:

Add '0.3' to each side of the equation.
-0.3 + 0.3y + 0.3 + y2 = 0 + 0.3

Reorder the terms:
-0.3 + 0.3 + 0.3y + y2 = 0 + 0.3

Combine like terms: -0.3 + 0.3 = 0.0
0.0 + 0.3y + y2 = 0 + 0.3
0.3y + y2 = 0 + 0.3

Combine like terms: 0 + 0.3 = 0.3
0.3y + y2 = 0.3

The y term is 0.3y.  Take half its coefficient (0.15).
Square it (0.0225) and add it to both sides.

Add '0.0225' to each side of the equation.
0.3y + 0.0225 + y2 = 0.3 + 0.0225

Reorder the terms:
0.0225 + 0.3y + y2 = 0.3 + 0.0225

Combine like terms: 0.3 + 0.0225 = 0.3225
0.0225 + 0.3y + y2 = 0.3225

Factor a perfect square on the left side:
(y + 0.15)(y + 0.15) = 0.3225

Calculate the square root of the right side: 0.567890835

Break this problem into two subproblems by setting 
(y + 0.15) equal to 0.567890835 and -0.567890835.

Subproblem 1

y + 0.15 = 0.567890835 Simplifying y + 0.15 = 0.567890835 Reorder the terms: 0.15 + y = 0.567890835 Solving 0.15 + y = 0.567890835 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.15' to each side of the equation. 0.15 + -0.15 + y = 0.567890835 + -0.15 Combine like terms: 0.15 + -0.15 = 0.00 0.00 + y = 0.567890835 + -0.15 y = 0.567890835 + -0.15 Combine like terms: 0.567890835 + -0.15 = 0.417890835 y = 0.417890835 Simplifying y = 0.417890835

Subproblem 2

y + 0.15 = -0.567890835 Simplifying y + 0.15 = -0.567890835 Reorder the terms: 0.15 + y = -0.567890835 Solving 0.15 + y = -0.567890835 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.15' to each side of the equation. 0.15 + -0.15 + y = -0.567890835 + -0.15 Combine like terms: 0.15 + -0.15 = 0.00 0.00 + y = -0.567890835 + -0.15 y = -0.567890835 + -0.15 Combine like terms: -0.567890835 + -0.15 = -0.717890835 y = -0.717890835 Simplifying y = -0.717890835

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.417890835, -0.717890835}

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