y^2+14y+49=12

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Solution for y^2+14y+49=12 equation:


Simplifying
y2 + 14y + 49 = 12

Reorder the terms:
49 + 14y + y2 = 12

Solving
49 + 14y + y2 = 12

Solving for variable 'y'.

Reorder the terms:
49 + -12 + 14y + y2 = 12 + -12

Combine like terms: 49 + -12 = 37
37 + 14y + y2 = 12 + -12

Combine like terms: 12 + -12 = 0
37 + 14y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-37' to each side of the equation.
37 + 14y + -37 + y2 = 0 + -37

Reorder the terms:
37 + -37 + 14y + y2 = 0 + -37

Combine like terms: 37 + -37 = 0
0 + 14y + y2 = 0 + -37
14y + y2 = 0 + -37

Combine like terms: 0 + -37 = -37
14y + y2 = -37

The y term is 14y.  Take half its coefficient (7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
14y + 49 + y2 = -37 + 49

Reorder the terms:
49 + 14y + y2 = -37 + 49

Combine like terms: -37 + 49 = 12
49 + 14y + y2 = 12

Factor a perfect square on the left side:
(y + 7)(y + 7) = 12

Calculate the square root of the right side: 3.464101615

Break this problem into two subproblems by setting 
(y + 7) equal to 3.464101615 and -3.464101615.

Subproblem 1

y + 7 = 3.464101615 Simplifying y + 7 = 3.464101615 Reorder the terms: 7 + y = 3.464101615 Solving 7 + y = 3.464101615 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + y = 3.464101615 + -7 Combine like terms: 7 + -7 = 0 0 + y = 3.464101615 + -7 y = 3.464101615 + -7 Combine like terms: 3.464101615 + -7 = -3.535898385 y = -3.535898385 Simplifying y = -3.535898385

Subproblem 2

y + 7 = -3.464101615 Simplifying y + 7 = -3.464101615 Reorder the terms: 7 + y = -3.464101615 Solving 7 + y = -3.464101615 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + y = -3.464101615 + -7 Combine like terms: 7 + -7 = 0 0 + y = -3.464101615 + -7 y = -3.464101615 + -7 Combine like terms: -3.464101615 + -7 = -10.464101615 y = -10.464101615 Simplifying y = -10.464101615

Solution

The solution to the problem is based on the solutions from the subproblems. y = {-3.535898385, -10.464101615}

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