(l+256)+(l+4)=l^2

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Solution for (l+256)+(l+4)=l^2 equation:


Simplifying
(l + 256) + (l + 4) = l2

Reorder the terms:
(256 + l) + (l + 4) = l2

Remove parenthesis around (256 + l)
256 + l + (l + 4) = l2

Reorder the terms:
256 + l + (4 + l) = l2

Remove parenthesis around (4 + l)
256 + l + 4 + l = l2

Reorder the terms:
256 + 4 + l + l = l2

Combine like terms: 256 + 4 = 260
260 + l + l = l2

Combine like terms: l + l = 2l
260 + 2l = l2

Solving
260 + 2l = l2

Solving for variable 'l'.

Combine like terms: l2 + -1l2 = 0
260 + 2l + -1l2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-260 + -2l + l2 = 0

Move the constant term to the right:

Add '260' to each side of the equation.
-260 + -2l + 260 + l2 = 0 + 260

Reorder the terms:
-260 + 260 + -2l + l2 = 0 + 260

Combine like terms: -260 + 260 = 0
0 + -2l + l2 = 0 + 260
-2l + l2 = 0 + 260

Combine like terms: 0 + 260 = 260
-2l + l2 = 260

The l term is -2l.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2l + 1 + l2 = 260 + 1

Reorder the terms:
1 + -2l + l2 = 260 + 1

Combine like terms: 260 + 1 = 261
1 + -2l + l2 = 261

Factor a perfect square on the left side:
(l + -1)(l + -1) = 261

Calculate the square root of the right side: 16.155494421

Break this problem into two subproblems by setting 
(l + -1) equal to 16.155494421 and -16.155494421.

Subproblem 1

l + -1 = 16.155494421 Simplifying l + -1 = 16.155494421 Reorder the terms: -1 + l = 16.155494421 Solving -1 + l = 16.155494421 Solving for variable 'l'. Move all terms containing l to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + l = 16.155494421 + 1 Combine like terms: -1 + 1 = 0 0 + l = 16.155494421 + 1 l = 16.155494421 + 1 Combine like terms: 16.155494421 + 1 = 17.155494421 l = 17.155494421 Simplifying l = 17.155494421

Subproblem 2

l + -1 = -16.155494421 Simplifying l + -1 = -16.155494421 Reorder the terms: -1 + l = -16.155494421 Solving -1 + l = -16.155494421 Solving for variable 'l'. Move all terms containing l to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + l = -16.155494421 + 1 Combine like terms: -1 + 1 = 0 0 + l = -16.155494421 + 1 l = -16.155494421 + 1 Combine like terms: -16.155494421 + 1 = -15.155494421 l = -15.155494421 Simplifying l = -15.155494421

Solution

The solution to the problem is based on the solutions from the subproblems. l = {17.155494421, -15.155494421}

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