0=15y^2-37y-22

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Solution for 0=15y^2-37y-22 equation:


Simplifying
0 = 15y2 + -37y + -22

Reorder the terms:
0 = -22 + -37y + 15y2

Solving
0 = -22 + -37y + 15y2

Solving for variable 'y'.

Combine like terms: 0 + 22 = 22
22 + 37y + -15y2 = -22 + -37y + 15y2 + 22 + 37y + -15y2

Reorder the terms:
22 + 37y + -15y2 = -22 + 22 + -37y + 37y + 15y2 + -15y2

Combine like terms: -22 + 22 = 0
22 + 37y + -15y2 = 0 + -37y + 37y + 15y2 + -15y2
22 + 37y + -15y2 = -37y + 37y + 15y2 + -15y2

Combine like terms: -37y + 37y = 0
22 + 37y + -15y2 = 0 + 15y2 + -15y2
22 + 37y + -15y2 = 15y2 + -15y2

Combine like terms: 15y2 + -15y2 = 0
22 + 37y + -15y2 = 0

Begin completing the square.  Divide all terms by
-15 the coefficient of the squared term: 

Divide each side by '-15'.
-1.466666667 + -2.466666667y + y2 = 0

Move the constant term to the right:

Add '1.466666667' to each side of the equation.
-1.466666667 + -2.466666667y + 1.466666667 + y2 = 0 + 1.466666667

Reorder the terms:
-1.466666667 + 1.466666667 + -2.466666667y + y2 = 0 + 1.466666667

Combine like terms: -1.466666667 + 1.466666667 = 0.000000000
0.000000000 + -2.466666667y + y2 = 0 + 1.466666667
-2.466666667y + y2 = 0 + 1.466666667

Combine like terms: 0 + 1.466666667 = 1.466666667
-2.466666667y + y2 = 1.466666667

The y term is -2.466666667y.  Take half its coefficient (-1.233333334).
Square it (1.521111113) and add it to both sides.

Add '1.521111113' to each side of the equation.
-2.466666667y + 1.521111113 + y2 = 1.466666667 + 1.521111113

Reorder the terms:
1.521111113 + -2.466666667y + y2 = 1.466666667 + 1.521111113

Combine like terms: 1.466666667 + 1.521111113 = 2.98777778
1.521111113 + -2.466666667y + y2 = 2.98777778

Factor a perfect square on the left side:
(y + -1.233333334)(y + -1.233333334) = 2.98777778

Calculate the square root of the right side: 1.728518956

Break this problem into two subproblems by setting 
(y + -1.233333334) equal to 1.728518956 and -1.728518956.

Subproblem 1

y + -1.233333334 = 1.728518956 Simplifying y + -1.233333334 = 1.728518956 Reorder the terms: -1.233333334 + y = 1.728518956 Solving -1.233333334 + y = 1.728518956 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.233333334' to each side of the equation. -1.233333334 + 1.233333334 + y = 1.728518956 + 1.233333334 Combine like terms: -1.233333334 + 1.233333334 = 0.000000000 0.000000000 + y = 1.728518956 + 1.233333334 y = 1.728518956 + 1.233333334 Combine like terms: 1.728518956 + 1.233333334 = 2.96185229 y = 2.96185229 Simplifying y = 2.96185229

Subproblem 2

y + -1.233333334 = -1.728518956 Simplifying y + -1.233333334 = -1.728518956 Reorder the terms: -1.233333334 + y = -1.728518956 Solving -1.233333334 + y = -1.728518956 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.233333334' to each side of the equation. -1.233333334 + 1.233333334 + y = -1.728518956 + 1.233333334 Combine like terms: -1.233333334 + 1.233333334 = 0.000000000 0.000000000 + y = -1.728518956 + 1.233333334 y = -1.728518956 + 1.233333334 Combine like terms: -1.728518956 + 1.233333334 = -0.495185622 y = -0.495185622 Simplifying y = -0.495185622

Solution

The solution to the problem is based on the solutions from the subproblems. y = {2.96185229, -0.495185622}

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