1612=(5+X)X

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Solution for 1612=(5+X)X equation:


Simplifying
1612 = (5 + X) * X

Reorder the terms for easier multiplication:
1612 = X(5 + X)
1612 = (5 * X + X * X)
1612 = (5X + X2)

Solving
1612 = 5X + X2

Solving for variable 'X'.

Reorder the terms:
1612 + -5X + -1X2 = 5X + -5X + X2 + -1X2

Combine like terms: 5X + -5X = 0
1612 + -5X + -1X2 = 0 + X2 + -1X2
1612 + -5X + -1X2 = X2 + -1X2

Combine like terms: X2 + -1X2 = 0
1612 + -5X + -1X2 = 0

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

Divide each side by '-1'.
-1612 + 5X + X2 = 0

Move the constant term to the right:

Add '1612' to each side of the equation.
-1612 + 5X + 1612 + X2 = 0 + 1612

Reorder the terms:
-1612 + 1612 + 5X + X2 = 0 + 1612

Combine like terms: -1612 + 1612 = 0
0 + 5X + X2 = 0 + 1612
5X + X2 = 0 + 1612

Combine like terms: 0 + 1612 = 1612
5X + X2 = 1612

The X term is 5X.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5X + 6.25 + X2 = 1612 + 6.25

Reorder the terms:
6.25 + 5X + X2 = 1612 + 6.25

Combine like terms: 1612 + 6.25 = 1618.25
6.25 + 5X + X2 = 1618.25

Factor a perfect square on the left side:
(X + 2.5)(X + 2.5) = 1618.25

Calculate the square root of the right side: 40.227478171

Break this problem into two subproblems by setting 
(X + 2.5) equal to 40.227478171 and -40.227478171.

Subproblem 1

X + 2.5 = 40.227478171 Simplifying X + 2.5 = 40.227478171 Reorder the terms: 2.5 + X = 40.227478171 Solving 2.5 + X = 40.227478171 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + X = 40.227478171 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + X = 40.227478171 + -2.5 X = 40.227478171 + -2.5 Combine like terms: 40.227478171 + -2.5 = 37.727478171 X = 37.727478171 Simplifying X = 37.727478171

Subproblem 2

X + 2.5 = -40.227478171 Simplifying X + 2.5 = -40.227478171 Reorder the terms: 2.5 + X = -40.227478171 Solving 2.5 + X = -40.227478171 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + X = -40.227478171 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + X = -40.227478171 + -2.5 X = -40.227478171 + -2.5 Combine like terms: -40.227478171 + -2.5 = -42.727478171 X = -42.727478171 Simplifying X = -42.727478171

Solution

The solution to the problem is based on the solutions from the subproblems. X = {37.727478171, -42.727478171}

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