x(x+6)=2880

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Solution for x(x+6)=2880 equation:


Simplifying
x(x + 6) = 2880

Reorder the terms:
x(6 + x) = 2880
(6 * x + x * x) = 2880
(6x + x2) = 2880

Solving
6x + x2 = 2880

Solving for variable 'x'.

Reorder the terms:
-2880 + 6x + x2 = 2880 + -2880

Combine like terms: 2880 + -2880 = 0
-2880 + 6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2880' to each side of the equation.
-2880 + 6x + 2880 + x2 = 0 + 2880

Reorder the terms:
-2880 + 2880 + 6x + x2 = 0 + 2880

Combine like terms: -2880 + 2880 = 0
0 + 6x + x2 = 0 + 2880
6x + x2 = 0 + 2880

Combine like terms: 0 + 2880 = 2880
6x + x2 = 2880

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 = 2880 + 9

Reorder the terms:
9 + 6x + x2 = 2880 + 9

Combine like terms: 2880 + 9 = 2889
9 + 6x + x2 = 2889

Factor a perfect square on the left side:
(x + 3)(x + 3) = 2889

Calculate the square root of the right side: 53.749418602

Break this problem into two subproblems by setting 
(x + 3) equal to 53.749418602 and -53.749418602.

Subproblem 1

x + 3 = 53.749418602 Simplifying x + 3 = 53.749418602 Reorder the terms: 3 + x = 53.749418602 Solving 3 + x = 53.749418602 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 = 53.749418602 + -3 Combine like terms: 3 + -3 = 0 0 + x = 53.749418602 + -3 x = 53.749418602 + -3 Combine like terms: 53.749418602 + -3 = 50.749418602 x = 50.749418602 Simplifying x = 50.749418602

Subproblem 2

x + 3 = -53.749418602 Simplifying x + 3 = -53.749418602 Reorder the terms: 3 + x = -53.749418602 Solving 3 + x = -53.749418602 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 = -53.749418602 + -3 Combine like terms: 3 + -3 = 0 0 + x = -53.749418602 + -3 x = -53.749418602 + -3 Combine like terms: -53.749418602 + -3 = -56.749418602 x = -56.749418602 Simplifying x = -56.749418602

Solution

The solution to the problem is based on the solutions from the subproblems. x = {50.749418602, -56.749418602}

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