50+12L-1.5L^2=0

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Solution for 50+12L-1.5L^2=0 equation:


Simplifying
50 + 12L + -1.5L2 = 0

Solving
50 + 12L + -1.5L2 = 0

Solving for variable 'L'.

Begin completing the square.  Divide all terms by
-1.5 the coefficient of the squared term: 

Divide each side by '-1.5'.
-33.33333333 + -8L + L2 = 0

Move the constant term to the right:

Add '33.33333333' to each side of the equation.
-33.33333333 + -8L + 33.33333333 + L2 = 0 + 33.33333333

Reorder the terms:
-33.33333333 + 33.33333333 + -8L + L2 = 0 + 33.33333333

Combine like terms: -33.33333333 + 33.33333333 = 0.00000000
0.00000000 + -8L + L2 = 0 + 33.33333333
-8L + L2 = 0 + 33.33333333

Combine like terms: 0 + 33.33333333 = 33.33333333
-8L + L2 = 33.33333333

The L term is -8L.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8L + 16 + L2 = 33.33333333 + 16

Reorder the terms:
16 + -8L + L2 = 33.33333333 + 16

Combine like terms: 33.33333333 + 16 = 49.33333333
16 + -8L + L2 = 49.33333333

Factor a perfect square on the left side:
(L + -4)(L + -4) = 49.33333333

Calculate the square root of the right side: 7.023769168

Break this problem into two subproblems by setting 
(L + -4) equal to 7.023769168 and -7.023769168.

Subproblem 1

L + -4 = 7.023769168 Simplifying L + -4 = 7.023769168 Reorder the terms: -4 + L = 7.023769168 Solving -4 + L = 7.023769168 Solving for variable 'L'. Move all terms containing L to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + L = 7.023769168 + 4 Combine like terms: -4 + 4 = 0 0 + L = 7.023769168 + 4 L = 7.023769168 + 4 Combine like terms: 7.023769168 + 4 = 11.023769168 L = 11.023769168 Simplifying L = 11.023769168

Subproblem 2

L + -4 = -7.023769168 Simplifying L + -4 = -7.023769168 Reorder the terms: -4 + L = -7.023769168 Solving -4 + L = -7.023769168 Solving for variable 'L'. Move all terms containing L to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + L = -7.023769168 + 4 Combine like terms: -4 + 4 = 0 0 + L = -7.023769168 + 4 L = -7.023769168 + 4 Combine like terms: -7.023769168 + 4 = -3.023769168 L = -3.023769168 Simplifying L = -3.023769168

Solution

The solution to the problem is based on the solutions from the subproblems. L = {11.023769168, -3.023769168}

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