12500y^2+3357.6y-1284.8=0

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Solution for 12500y^2+3357.6y-1284.8=0 equation:


Simplifying
12500y2 + 3357.6y + -1284.8 = 0

Reorder the terms:
-1284.8 + 3357.6y + 12500y2 = 0

Solving
-1284.8 + 3357.6y + 12500y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
12500 the coefficient of the squared term: 

Divide each side by '12500'.
-0.102784 + 0.268608y + y2 = 0

Move the constant term to the right:

Add '0.102784' to each side of the equation.
-0.102784 + 0.268608y + 0.102784 + y2 = 0 + 0.102784

Reorder the terms:
-0.102784 + 0.102784 + 0.268608y + y2 = 0 + 0.102784

Combine like terms: -0.102784 + 0.102784 = 0.000000
0.000000 + 0.268608y + y2 = 0 + 0.102784
0.268608y + y2 = 0 + 0.102784

Combine like terms: 0 + 0.102784 = 0.102784
0.268608y + y2 = 0.102784

The y term is 0.268608y.  Take half its coefficient (0.134304).
Square it (0.01803756442) and add it to both sides.

Add '0.01803756442' to each side of the equation.
0.268608y + 0.01803756442 + y2 = 0.102784 + 0.01803756442

Reorder the terms:
0.01803756442 + 0.268608y + y2 = 0.102784 + 0.01803756442

Combine like terms: 0.102784 + 0.01803756442 = 0.12082156442
0.01803756442 + 0.268608y + y2 = 0.12082156442

Factor a perfect square on the left side:
(y + 0.134304)(y + 0.134304) = 0.12082156442

Calculate the square root of the right side: 0.347593965

Break this problem into two subproblems by setting 
(y + 0.134304) equal to 0.347593965 and -0.347593965.

Subproblem 1

y + 0.134304 = 0.347593965 Simplifying y + 0.134304 = 0.347593965 Reorder the terms: 0.134304 + y = 0.347593965 Solving 0.134304 + y = 0.347593965 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.134304' to each side of the equation. 0.134304 + -0.134304 + y = 0.347593965 + -0.134304 Combine like terms: 0.134304 + -0.134304 = 0.000000 0.000000 + y = 0.347593965 + -0.134304 y = 0.347593965 + -0.134304 Combine like terms: 0.347593965 + -0.134304 = 0.213289965 y = 0.213289965 Simplifying y = 0.213289965

Subproblem 2

y + 0.134304 = -0.347593965 Simplifying y + 0.134304 = -0.347593965 Reorder the terms: 0.134304 + y = -0.347593965 Solving 0.134304 + y = -0.347593965 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.134304' to each side of the equation. 0.134304 + -0.134304 + y = -0.347593965 + -0.134304 Combine like terms: 0.134304 + -0.134304 = 0.000000 0.000000 + y = -0.347593965 + -0.134304 y = -0.347593965 + -0.134304 Combine like terms: -0.347593965 + -0.134304 = -0.481897965 y = -0.481897965 Simplifying y = -0.481897965

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.213289965, -0.481897965}

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