(x+9)(x+9)=14

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Solution for (x+9)(x+9)=14 equation:


Simplifying
(x + 9)(x + 9) = 14

Reorder the terms:
(9 + x)(x + 9) = 14

Reorder the terms:
(9 + x)(9 + x) = 14

Multiply (9 + x) * (9 + x)
(9(9 + x) + x(9 + x)) = 14
((9 * 9 + x * 9) + x(9 + x)) = 14
((81 + 9x) + x(9 + x)) = 14
(81 + 9x + (9 * x + x * x)) = 14
(81 + 9x + (9x + x2)) = 14

Combine like terms: 9x + 9x = 18x
(81 + 18x + x2) = 14

Solving
81 + 18x + x2 = 14

Solving for variable 'x'.

Reorder the terms:
81 + -14 + 18x + x2 = 14 + -14

Combine like terms: 81 + -14 = 67
67 + 18x + x2 = 14 + -14

Combine like terms: 14 + -14 = 0
67 + 18x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-67' to each side of the equation.
67 + 18x + -67 + x2 = 0 + -67

Reorder the terms:
67 + -67 + 18x + x2 = 0 + -67

Combine like terms: 67 + -67 = 0
0 + 18x + x2 = 0 + -67
18x + x2 = 0 + -67

Combine like terms: 0 + -67 = -67
18x + x2 = -67

The x term is 18x.  Take half its coefficient (9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
18x + 81 + x2 = -67 + 81

Reorder the terms:
81 + 18x + x2 = -67 + 81

Combine like terms: -67 + 81 = 14
81 + 18x + x2 = 14

Factor a perfect square on the left side:
(x + 9)(x + 9) = 14

Calculate the square root of the right side: 3.741657387

Break this problem into two subproblems by setting 
(x + 9) equal to 3.741657387 and -3.741657387.

Subproblem 1

x + 9 = 3.741657387 Simplifying x + 9 = 3.741657387 Reorder the terms: 9 + x = 3.741657387 Solving 9 + x = 3.741657387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = 3.741657387 + -9 Combine like terms: 9 + -9 = 0 0 + x = 3.741657387 + -9 x = 3.741657387 + -9 Combine like terms: 3.741657387 + -9 = -5.258342613 x = -5.258342613 Simplifying x = -5.258342613

Subproblem 2

x + 9 = -3.741657387 Simplifying x + 9 = -3.741657387 Reorder the terms: 9 + x = -3.741657387 Solving 9 + x = -3.741657387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = -3.741657387 + -9 Combine like terms: 9 + -9 = 0 0 + x = -3.741657387 + -9 x = -3.741657387 + -9 Combine like terms: -3.741657387 + -9 = -12.741657387 x = -12.741657387 Simplifying x = -12.741657387

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-5.258342613, -12.741657387}

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