5x(33-5x)=33

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Solution for 5x(33-5x)=33 equation:


Simplifying
5x(33 + -5x) = 33
(33 * 5x + -5x * 5x) = 33
(165x + -25x2) = 33

Solving
165x + -25x2 = 33

Solving for variable 'x'.

Reorder the terms:
-33 + 165x + -25x2 = 33 + -33

Combine like terms: 33 + -33 = 0
-33 + 165x + -25x2 = 0

Begin completing the square.  Divide all terms by
-25 the coefficient of the squared term: 

Divide each side by '-25'.
1.32 + -6.6x + x2 = 0

Move the constant term to the right:

Add '-1.32' to each side of the equation.
1.32 + -6.6x + -1.32 + x2 = 0 + -1.32

Reorder the terms:
1.32 + -1.32 + -6.6x + x2 = 0 + -1.32

Combine like terms: 1.32 + -1.32 = 0.00
0.00 + -6.6x + x2 = 0 + -1.32
-6.6x + x2 = 0 + -1.32

Combine like terms: 0 + -1.32 = -1.32
-6.6x + x2 = -1.32

The x term is -6.6x.  Take half its coefficient (-3.3).
Square it (10.89) and add it to both sides.

Add '10.89' to each side of the equation.
-6.6x + 10.89 + x2 = -1.32 + 10.89

Reorder the terms:
10.89 + -6.6x + x2 = -1.32 + 10.89

Combine like terms: -1.32 + 10.89 = 9.57
10.89 + -6.6x + x2 = 9.57

Factor a perfect square on the left side:
(x + -3.3)(x + -3.3) = 9.57

Calculate the square root of the right side: 3.09354166

Break this problem into two subproblems by setting 
(x + -3.3) equal to 3.09354166 and -3.09354166.

Subproblem 1

x + -3.3 = 3.09354166 Simplifying x + -3.3 = 3.09354166 Reorder the terms: -3.3 + x = 3.09354166 Solving -3.3 + x = 3.09354166 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.3' to each side of the equation. -3.3 + 3.3 + x = 3.09354166 + 3.3 Combine like terms: -3.3 + 3.3 = 0.0 0.0 + x = 3.09354166 + 3.3 x = 3.09354166 + 3.3 Combine like terms: 3.09354166 + 3.3 = 6.39354166 x = 6.39354166 Simplifying x = 6.39354166

Subproblem 2

x + -3.3 = -3.09354166 Simplifying x + -3.3 = -3.09354166 Reorder the terms: -3.3 + x = -3.09354166 Solving -3.3 + x = -3.09354166 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.3' to each side of the equation. -3.3 + 3.3 + x = -3.09354166 + 3.3 Combine like terms: -3.3 + 3.3 = 0.0 0.0 + x = -3.09354166 + 3.3 x = -3.09354166 + 3.3 Combine like terms: -3.09354166 + 3.3 = 0.20645834 x = 0.20645834 Simplifying x = 0.20645834

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.39354166, 0.20645834}

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