(75+x)(x+75)=(75)2

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Solution for (75+x)(x+75)=(75)2 equation:


Simplifying
(75 + x)(x + 75) = (75) * 2

Reorder the terms:
(75 + x)(75 + x) = (75) * 2

Multiply (75 + x) * (75 + x)
(75(75 + x) + x(75 + x)) = (75) * 2
((75 * 75 + x * 75) + x(75 + x)) = (75) * 2
((5625 + 75x) + x(75 + x)) = (75) * 2
(5625 + 75x + (75 * x + x * x)) = (75) * 2
(5625 + 75x + (75x + x2)) = (75) * 2

Combine like terms: 75x + 75x = 150x
(5625 + 150x + x2) = (75) * 2

Multiply 75 * 2
5625 + 150x + x2 = 150

Solving
5625 + 150x + x2 = 150

Solving for variable 'x'.

Reorder the terms:
5625 + -150 + 150x + x2 = 150 + -150

Combine like terms: 5625 + -150 = 5475
5475 + 150x + x2 = 150 + -150

Combine like terms: 150 + -150 = 0
5475 + 150x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-5475' to each side of the equation.
5475 + 150x + -5475 + x2 = 0 + -5475

Reorder the terms:
5475 + -5475 + 150x + x2 = 0 + -5475

Combine like terms: 5475 + -5475 = 0
0 + 150x + x2 = 0 + -5475
150x + x2 = 0 + -5475

Combine like terms: 0 + -5475 = -5475
150x + x2 = -5475

The x term is 150x.  Take half its coefficient (75).
Square it (5625) and add it to both sides.

Add '5625' to each side of the equation.
150x + 5625 + x2 = -5475 + 5625

Reorder the terms:
5625 + 150x + x2 = -5475 + 5625

Combine like terms: -5475 + 5625 = 150
5625 + 150x + x2 = 150

Factor a perfect square on the left side:
(x + 75)(x + 75) = 150

Calculate the square root of the right side: 12.247448714

Break this problem into two subproblems by setting 
(x + 75) equal to 12.247448714 and -12.247448714.

Subproblem 1

x + 75 = 12.247448714 Simplifying x + 75 = 12.247448714 Reorder the terms: 75 + x = 12.247448714 Solving 75 + x = 12.247448714 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-75' to each side of the equation. 75 + -75 + x = 12.247448714 + -75 Combine like terms: 75 + -75 = 0 0 + x = 12.247448714 + -75 x = 12.247448714 + -75 Combine like terms: 12.247448714 + -75 = -62.752551286 x = -62.752551286 Simplifying x = -62.752551286

Subproblem 2

x + 75 = -12.247448714 Simplifying x + 75 = -12.247448714 Reorder the terms: 75 + x = -12.247448714 Solving 75 + x = -12.247448714 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-75' to each side of the equation. 75 + -75 + x = -12.247448714 + -75 Combine like terms: 75 + -75 = 0 0 + x = -12.247448714 + -75 x = -12.247448714 + -75 Combine like terms: -12.247448714 + -75 = -87.247448714 x = -87.247448714 Simplifying x = -87.247448714

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-62.752551286, -87.247448714}

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