2y^2+25y-150=0

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Solution for 2y^2+25y-150=0 equation:


Simplifying
2y2 + 25y + -150 = 0

Reorder the terms:
-150 + 25y + 2y2 = 0

Solving
-150 + 25y + 2y2 = 0

Solving for variable 'y'.

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

Divide each side by '2'.
-75 + 12.5y + y2 = 0

Move the constant term to the right:

Add '75' to each side of the equation.
-75 + 12.5y + 75 + y2 = 0 + 75

Reorder the terms:
-75 + 75 + 12.5y + y2 = 0 + 75

Combine like terms: -75 + 75 = 0
0 + 12.5y + y2 = 0 + 75
12.5y + y2 = 0 + 75

Combine like terms: 0 + 75 = 75
12.5y + y2 = 75

The y term is 12.5y.  Take half its coefficient (6.25).
Square it (39.0625) and add it to both sides.

Add '39.0625' to each side of the equation.
12.5y + 39.0625 + y2 = 75 + 39.0625

Reorder the terms:
39.0625 + 12.5y + y2 = 75 + 39.0625

Combine like terms: 75 + 39.0625 = 114.0625
39.0625 + 12.5y + y2 = 114.0625

Factor a perfect square on the left side:
(y + 6.25)(y + 6.25) = 114.0625

Calculate the square root of the right side: 10.680004682

Break this problem into two subproblems by setting 
(y + 6.25) equal to 10.680004682 and -10.680004682.

Subproblem 1

y + 6.25 = 10.680004682 Simplifying y + 6.25 = 10.680004682 Reorder the terms: 6.25 + y = 10.680004682 Solving 6.25 + y = 10.680004682 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-6.25' to each side of the equation. 6.25 + -6.25 + y = 10.680004682 + -6.25 Combine like terms: 6.25 + -6.25 = 0.00 0.00 + y = 10.680004682 + -6.25 y = 10.680004682 + -6.25 Combine like terms: 10.680004682 + -6.25 = 4.430004682 y = 4.430004682 Simplifying y = 4.430004682

Subproblem 2

y + 6.25 = -10.680004682 Simplifying y + 6.25 = -10.680004682 Reorder the terms: 6.25 + y = -10.680004682 Solving 6.25 + y = -10.680004682 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-6.25' to each side of the equation. 6.25 + -6.25 + y = -10.680004682 + -6.25 Combine like terms: 6.25 + -6.25 = 0.00 0.00 + y = -10.680004682 + -6.25 y = -10.680004682 + -6.25 Combine like terms: -10.680004682 + -6.25 = -16.930004682 y = -16.930004682 Simplifying y = -16.930004682

Solution

The solution to the problem is based on the solutions from the subproblems. y = {4.430004682, -16.930004682}

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