y^2-4y-37=0

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Solution for y^2-4y-37=0 equation:


Simplifying
y2 + -4y + -37 = 0

Reorder the terms:
-37 + -4y + y2 = 0

Solving
-37 + -4y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '37' to each side of the equation.
-37 + -4y + 37 + y2 = 0 + 37

Reorder the terms:
-37 + 37 + -4y + y2 = 0 + 37

Combine like terms: -37 + 37 = 0
0 + -4y + y2 = 0 + 37
-4y + y2 = 0 + 37

Combine like terms: 0 + 37 = 37
-4y + y2 = 37

The y term is -4y.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4y + 4 + y2 = 37 + 4

Reorder the terms:
4 + -4y + y2 = 37 + 4

Combine like terms: 37 + 4 = 41
4 + -4y + y2 = 41

Factor a perfect square on the left side:
(y + -2)(y + -2) = 41

Calculate the square root of the right side: 6.403124237

Break this problem into two subproblems by setting 
(y + -2) equal to 6.403124237 and -6.403124237.

Subproblem 1

y + -2 = 6.403124237 Simplifying y + -2 = 6.403124237 Reorder the terms: -2 + y = 6.403124237 Solving -2 + y = 6.403124237 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + y = 6.403124237 + 2 Combine like terms: -2 + 2 = 0 0 + y = 6.403124237 + 2 y = 6.403124237 + 2 Combine like terms: 6.403124237 + 2 = 8.403124237 y = 8.403124237 Simplifying y = 8.403124237

Subproblem 2

y + -2 = -6.403124237 Simplifying y + -2 = -6.403124237 Reorder the terms: -2 + y = -6.403124237 Solving -2 + y = -6.403124237 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + y = -6.403124237 + 2 Combine like terms: -2 + 2 = 0 0 + y = -6.403124237 + 2 y = -6.403124237 + 2 Combine like terms: -6.403124237 + 2 = -4.403124237 y = -4.403124237 Simplifying y = -4.403124237

Solution

The solution to the problem is based on the solutions from the subproblems. y = {8.403124237, -4.403124237}

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