x(x+12)=202

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Solution for x(x+12)=202 equation:


Simplifying
x(x + 12) = 202

Reorder the terms:
x(12 + x) = 202
(12 * x + x * x) = 202
(12x + x2) = 202

Solving
12x + x2 = 202

Solving for variable 'x'.

Reorder the terms:
-202 + 12x + x2 = 202 + -202

Combine like terms: 202 + -202 = 0
-202 + 12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '202' to each side of the equation.
-202 + 12x + 202 + x2 = 0 + 202

Reorder the terms:
-202 + 202 + 12x + x2 = 0 + 202

Combine like terms: -202 + 202 = 0
0 + 12x + x2 = 0 + 202
12x + x2 = 0 + 202

Combine like terms: 0 + 202 = 202
12x + x2 = 202

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = 202 + 36

Reorder the terms:
36 + 12x + x2 = 202 + 36

Combine like terms: 202 + 36 = 238
36 + 12x + x2 = 238

Factor a perfect square on the left side:
(x + 6)(x + 6) = 238

Calculate the square root of the right side: 15.427248621

Break this problem into two subproblems by setting 
(x + 6) equal to 15.427248621 and -15.427248621.

Subproblem 1

x + 6 = 15.427248621 Simplifying x + 6 = 15.427248621 Reorder the terms: 6 + x = 15.427248621 Solving 6 + x = 15.427248621 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 15.427248621 + -6 Combine like terms: 6 + -6 = 0 0 + x = 15.427248621 + -6 x = 15.427248621 + -6 Combine like terms: 15.427248621 + -6 = 9.427248621 x = 9.427248621 Simplifying x = 9.427248621

Subproblem 2

x + 6 = -15.427248621 Simplifying x + 6 = -15.427248621 Reorder the terms: 6 + x = -15.427248621 Solving 6 + x = -15.427248621 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -15.427248621 + -6 Combine like terms: 6 + -6 = 0 0 + x = -15.427248621 + -6 x = -15.427248621 + -6 Combine like terms: -15.427248621 + -6 = -21.427248621 x = -21.427248621 Simplifying x = -21.427248621

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.427248621, -21.427248621}

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