(-28y^2)+(3y)+(287)=0

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Solution for (-28y^2)+(3y)+(287)=0 equation:


Simplifying
(-28y2) + (3y) + (287) = 0
(-28y2) + (3y) + 287 = 0

Reorder the terms:
287 + (3y) + (-28y2) = 0

Solving
287 + (3y) + (-28y2) = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
-28 the coefficient of the squared term: 

Divide each side by '-28'.
-10.25 + (-0.1071428571y) + y2 = 0

Move the constant term to the right:

Add '10.25' to each side of the equation.
-10.25 + (-0.1071428571y) + 10.25 + y2 = 0 + 10.25

Reorder the terms:
-10.25 + 10.25 + (-0.1071428571y) + y2 = 0 + 10.25

Combine like terms: -10.25 + 10.25 = 0.00
0.00 + (-0.1071428571y) + y2 = 0 + 10.25
(-0.1071428571y) + y2 = 0 + 10.25

Combine like terms: 0 + 10.25 = 10.25
(-0.1071428571y) + y2 = 10.25

The y term is (-0.1071428571y).  Take half its coefficient (-0.05357142855).
Square it (0.002869897957) and add it to both sides.

Add '0.002869897957' to each side of the equation.
(-0.1071428571y) + 0.002869897957 + y2 = 10.25 + 0.002869897957

Reorder the terms:
0.002869897957 + (-0.1071428571y) + y2 = 10.25 + 0.002869897957

Combine like terms: 10.25 + 0.002869897957 = 10.252869897957
0.002869897957 + (-0.1071428571y) + y2 = 10.252869897957

Factor a perfect square on the left side:
((y) + -0.05357142855)((y) + -0.05357142855) = 10.252869897957

Calculate the square root of the right side: 3.20201029

Break this problem into two subproblems by setting 
((y) + -0.05357142855) equal to 3.20201029 and -3.20201029.

Subproblem 1

(y) + -0.05357142855 = 3.20201029 Simplifying (y) + -0.05357142855 = 3.20201029 y + -0.05357142855 = 3.20201029 Reorder the terms: -0.05357142855 + y = 3.20201029 Solving -0.05357142855 + y = 3.20201029 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.05357142855' to each side of the equation. -0.05357142855 + 0.05357142855 + y = 3.20201029 + 0.05357142855 Combine like terms: -0.05357142855 + 0.05357142855 = 0.00000000000 0.00000000000 + y = 3.20201029 + 0.05357142855 y = 3.20201029 + 0.05357142855 Combine like terms: 3.20201029 + 0.05357142855 = 3.25558171855 y = 3.25558171855 Simplifying y = 3.25558171855

Subproblem 2

(y) + -0.05357142855 = -3.20201029 Simplifying (y) + -0.05357142855 = -3.20201029 y + -0.05357142855 = -3.20201029 Reorder the terms: -0.05357142855 + y = -3.20201029 Solving -0.05357142855 + y = -3.20201029 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.05357142855' to each side of the equation. -0.05357142855 + 0.05357142855 + y = -3.20201029 + 0.05357142855 Combine like terms: -0.05357142855 + 0.05357142855 = 0.00000000000 0.00000000000 + y = -3.20201029 + 0.05357142855 y = -3.20201029 + 0.05357142855 Combine like terms: -3.20201029 + 0.05357142855 = -3.14843886145 y = -3.14843886145 Simplifying y = -3.14843886145

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.25558171855, -3.14843886145}

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