(100+x)(150+x)=18000

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Solution for (100+x)(150+x)=18000 equation:


Simplifying
(100 + x)(150 + x) = 18000

Multiply (100 + x) * (150 + x)
(100(150 + x) + x(150 + x)) = 18000
((150 * 100 + x * 100) + x(150 + x)) = 18000
((15000 + 100x) + x(150 + x)) = 18000
(15000 + 100x + (150 * x + x * x)) = 18000
(15000 + 100x + (150x + x2)) = 18000

Combine like terms: 100x + 150x = 250x
(15000 + 250x + x2) = 18000

Solving
15000 + 250x + x2 = 18000

Solving for variable 'x'.

Reorder the terms:
15000 + -18000 + 250x + x2 = 18000 + -18000

Combine like terms: 15000 + -18000 = -3000
-3000 + 250x + x2 = 18000 + -18000

Combine like terms: 18000 + -18000 = 0
-3000 + 250x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '3000' to each side of the equation.
-3000 + 250x + 3000 + x2 = 0 + 3000

Reorder the terms:
-3000 + 3000 + 250x + x2 = 0 + 3000

Combine like terms: -3000 + 3000 = 0
0 + 250x + x2 = 0 + 3000
250x + x2 = 0 + 3000

Combine like terms: 0 + 3000 = 3000
250x + x2 = 3000

The x term is 250x.  Take half its coefficient (125).
Square it (15625) and add it to both sides.

Add '15625' to each side of the equation.
250x + 15625 + x2 = 3000 + 15625

Reorder the terms:
15625 + 250x + x2 = 3000 + 15625

Combine like terms: 3000 + 15625 = 18625
15625 + 250x + x2 = 18625

Factor a perfect square on the left side:
(x + 125)(x + 125) = 18625

Calculate the square root of the right side: 136.47344064

Break this problem into two subproblems by setting 
(x + 125) equal to 136.47344064 and -136.47344064.

Subproblem 1

x + 125 = 136.47344064 Simplifying x + 125 = 136.47344064 Reorder the terms: 125 + x = 136.47344064 Solving 125 + x = 136.47344064 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-125' to each side of the equation. 125 + -125 + x = 136.47344064 + -125 Combine like terms: 125 + -125 = 0 0 + x = 136.47344064 + -125 x = 136.47344064 + -125 Combine like terms: 136.47344064 + -125 = 11.47344064 x = 11.47344064 Simplifying x = 11.47344064

Subproblem 2

x + 125 = -136.47344064 Simplifying x + 125 = -136.47344064 Reorder the terms: 125 + x = -136.47344064 Solving 125 + x = -136.47344064 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-125' to each side of the equation. 125 + -125 + x = -136.47344064 + -125 Combine like terms: 125 + -125 = 0 0 + x = -136.47344064 + -125 x = -136.47344064 + -125 Combine like terms: -136.47344064 + -125 = -261.47344064 x = -261.47344064 Simplifying x = -261.47344064

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.47344064, -261.47344064}

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