(18+2)*(x-4)=(x*x)-(32*32)

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Solution for (18+2)*(x-4)=(x*x)-(32*32) equation:


Simplifying
(18 + 2)(x + -4) = (x * x) + -1(32 * 32)

Combine like terms: 18 + 2 = 20
(20)(x + -4) = (x * x) + -1(32 * 32)

Reorder the terms:
20(-4 + x) = (x * x) + -1(32 * 32)
(-4 * 20 + x * 20) = (x * x) + -1(32 * 32)
(-80 + 20x) = (x * x) + -1(32 * 32)

Multiply x * x
-80 + 20x = (x2) + -1(32 * 32)
-80 + 20x = x2 + -1(32 * 32)

Multiply 32 * 32
-80 + 20x = x2 + -1(1024)

Multiply -1 * 1024
-80 + 20x = x2 + -1024

Reorder the terms:
-80 + 20x = -1024 + x2

Solving
-80 + 20x = -1024 + x2

Solving for variable 'x'.

Reorder the terms:
-80 + 1024 + 20x + -1x2 = -1024 + x2 + 1024 + -1x2

Combine like terms: -80 + 1024 = 944
944 + 20x + -1x2 = -1024 + x2 + 1024 + -1x2

Reorder the terms:
944 + 20x + -1x2 = -1024 + 1024 + x2 + -1x2

Combine like terms: -1024 + 1024 = 0
944 + 20x + -1x2 = 0 + x2 + -1x2
944 + 20x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
944 + 20x + -1x2 = 0

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

Divide each side by '-1'.
-944 + -20x + x2 = 0

Move the constant term to the right:

Add '944' to each side of the equation.
-944 + -20x + 944 + x2 = 0 + 944

Reorder the terms:
-944 + 944 + -20x + x2 = 0 + 944

Combine like terms: -944 + 944 = 0
0 + -20x + x2 = 0 + 944
-20x + x2 = 0 + 944

Combine like terms: 0 + 944 = 944
-20x + x2 = 944

The x term is -20x.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20x + 100 + x2 = 944 + 100

Reorder the terms:
100 + -20x + x2 = 944 + 100

Combine like terms: 944 + 100 = 1044
100 + -20x + x2 = 1044

Factor a perfect square on the left side:
(x + -10)(x + -10) = 1044

Calculate the square root of the right side: 32.310988843

Break this problem into two subproblems by setting 
(x + -10) equal to 32.310988843 and -32.310988843.

Subproblem 1

x + -10 = 32.310988843 Simplifying x + -10 = 32.310988843 Reorder the terms: -10 + x = 32.310988843 Solving -10 + x = 32.310988843 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = 32.310988843 + 10 Combine like terms: -10 + 10 = 0 0 + x = 32.310988843 + 10 x = 32.310988843 + 10 Combine like terms: 32.310988843 + 10 = 42.310988843 x = 42.310988843 Simplifying x = 42.310988843

Subproblem 2

x + -10 = -32.310988843 Simplifying x + -10 = -32.310988843 Reorder the terms: -10 + x = -32.310988843 Solving -10 + x = -32.310988843 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = -32.310988843 + 10 Combine like terms: -10 + 10 = 0 0 + x = -32.310988843 + 10 x = -32.310988843 + 10 Combine like terms: -32.310988843 + 10 = -22.310988843 x = -22.310988843 Simplifying x = -22.310988843

Solution

The solution to the problem is based on the solutions from the subproblems. x = {42.310988843, -22.310988843}

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