x^2+6x+9=.67

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Solution for x^2+6x+9=.67 equation:


Simplifying
x2 + 6x + 9 = 0.67

Reorder the terms:
9 + 6x + x2 = 0.67

Solving
9 + 6x + x2 = 0.67

Solving for variable 'x'.

Reorder the terms:
9 + -0.67 + 6x + x2 = 0.67 + -0.67

Combine like terms: 9 + -0.67 = 8.33
8.33 + 6x + x2 = 0.67 + -0.67

Combine like terms: 0.67 + -0.67 = 0.00
8.33 + 6x + x2 = 0.00

Begin completing the square.

Move the constant term to the right:

Add '-8.33' to each side of the equation.
8.33 + 6x + -8.33 + x2 = 0.00 + -8.33

Reorder the terms:
8.33 + -8.33 + 6x + x2 = 0.00 + -8.33

Combine like terms: 8.33 + -8.33 = 0.00
0.00 + 6x + x2 = 0.00 + -8.33
6x + x2 = 0.00 + -8.33

Combine like terms: 0.00 + -8.33 = -8.33
6x + x2 = -8.33

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

Add '9' to each side of the equation.
6x + 9 + x2 = -8.33 + 9

Reorder the terms:
9 + 6x + x2 = -8.33 + 9

Combine like terms: -8.33 + 9 = 0.67
9 + 6x + x2 = 0.67

Factor a perfect square on the left side:
(x + 3)(x + 3) = 0.67

Calculate the square root of the right side: 0.818535277

Break this problem into two subproblems by setting 
(x + 3) equal to 0.818535277 and -0.818535277.

Subproblem 1

x + 3 = 0.818535277 Simplifying x + 3 = 0.818535277 Reorder the terms: 3 + x = 0.818535277 Solving 3 + x = 0.818535277 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 0.818535277 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0.818535277 + -3 x = 0.818535277 + -3 Combine like terms: 0.818535277 + -3 = -2.181464723 x = -2.181464723 Simplifying x = -2.181464723

Subproblem 2

x + 3 = -0.818535277 Simplifying x + 3 = -0.818535277 Reorder the terms: 3 + x = -0.818535277 Solving 3 + x = -0.818535277 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -0.818535277 + -3 Combine like terms: 3 + -3 = 0 0 + x = -0.818535277 + -3 x = -0.818535277 + -3 Combine like terms: -0.818535277 + -3 = -3.818535277 x = -3.818535277 Simplifying x = -3.818535277

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.181464723, -3.818535277}

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