x^2+6x+9=60

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Solution for x^2+6x+9=60 equation:


Simplifying
x2 + 6x + 9 = 60

Reorder the terms:
9 + 6x + x2 = 60

Solving
9 + 6x + x2 = 60

Solving for variable 'x'.

Reorder the terms:
9 + -60 + 6x + x2 = 60 + -60

Combine like terms: 9 + -60 = -51
-51 + 6x + x2 = 60 + -60

Combine like terms: 60 + -60 = 0
-51 + 6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '51' to each side of the equation.
-51 + 6x + 51 + x2 = 0 + 51

Reorder the terms:
-51 + 51 + 6x + x2 = 0 + 51

Combine like terms: -51 + 51 = 0
0 + 6x + x2 = 0 + 51
6x + x2 = 0 + 51

Combine like terms: 0 + 51 = 51
6x + x2 = 51

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 = 51 + 9

Reorder the terms:
9 + 6x + x2 = 51 + 9

Combine like terms: 51 + 9 = 60
9 + 6x + x2 = 60

Factor a perfect square on the left side:
(x + 3)(x + 3) = 60

Calculate the square root of the right side: 7.745966692

Break this problem into two subproblems by setting 
(x + 3) equal to 7.745966692 and -7.745966692.

Subproblem 1

x + 3 = 7.745966692 Simplifying x + 3 = 7.745966692 Reorder the terms: 3 + x = 7.745966692 Solving 3 + x = 7.745966692 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 = 7.745966692 + -3 Combine like terms: 3 + -3 = 0 0 + x = 7.745966692 + -3 x = 7.745966692 + -3 Combine like terms: 7.745966692 + -3 = 4.745966692 x = 4.745966692 Simplifying x = 4.745966692

Subproblem 2

x + 3 = -7.745966692 Simplifying x + 3 = -7.745966692 Reorder the terms: 3 + x = -7.745966692 Solving 3 + x = -7.745966692 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 = -7.745966692 + -3 Combine like terms: 3 + -3 = 0 0 + x = -7.745966692 + -3 x = -7.745966692 + -3 Combine like terms: -7.745966692 + -3 = -10.745966692 x = -10.745966692 Simplifying x = -10.745966692

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.745966692, -10.745966692}

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