y^2+6y-196=0

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Solution for y^2+6y-196=0 equation:


Simplifying
y2 + 6y + -196 = 0

Reorder the terms:
-196 + 6y + y2 = 0

Solving
-196 + 6y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '196' to each side of the equation.
-196 + 6y + 196 + y2 = 0 + 196

Reorder the terms:
-196 + 196 + 6y + y2 = 0 + 196

Combine like terms: -196 + 196 = 0
0 + 6y + y2 = 0 + 196
6y + y2 = 0 + 196

Combine like terms: 0 + 196 = 196
6y + y2 = 196

The y term is 6y.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6y + 9 + y2 = 196 + 9

Reorder the terms:
9 + 6y + y2 = 196 + 9

Combine like terms: 196 + 9 = 205
9 + 6y + y2 = 205

Factor a perfect square on the left side:
(y + 3)(y + 3) = 205

Calculate the square root of the right side: 14.317821063

Break this problem into two subproblems by setting 
(y + 3) equal to 14.317821063 and -14.317821063.

Subproblem 1

y + 3 = 14.317821063 Simplifying y + 3 = 14.317821063 Reorder the terms: 3 + y = 14.317821063 Solving 3 + y = 14.317821063 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + y = 14.317821063 + -3 Combine like terms: 3 + -3 = 0 0 + y = 14.317821063 + -3 y = 14.317821063 + -3 Combine like terms: 14.317821063 + -3 = 11.317821063 y = 11.317821063 Simplifying y = 11.317821063

Subproblem 2

y + 3 = -14.317821063 Simplifying y + 3 = -14.317821063 Reorder the terms: 3 + y = -14.317821063 Solving 3 + y = -14.317821063 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + y = -14.317821063 + -3 Combine like terms: 3 + -3 = 0 0 + y = -14.317821063 + -3 y = -14.317821063 + -3 Combine like terms: -14.317821063 + -3 = -17.317821063 y = -17.317821063 Simplifying y = -17.317821063

Solution

The solution to the problem is based on the solutions from the subproblems. y = {11.317821063, -17.317821063}

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