8(x+3)*23(x-7)=55

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Solution for 8(x+3)*23(x-7)=55 equation:


Simplifying
8(x + 3) * 23(x + -7) = 55

Reorder the terms:
8(3 + x) * 23(x + -7) = 55

Reorder the terms:
8(3 + x) * 23(-7 + x) = 55

Reorder the terms for easier multiplication:
8 * 23(3 + x)(-7 + x) = 55

Multiply 8 * 23
184(3 + x)(-7 + x) = 55

Multiply (3 + x) * (-7 + x)
184(3(-7 + x) + x(-7 + x)) = 55
184((-7 * 3 + x * 3) + x(-7 + x)) = 55
184((-21 + 3x) + x(-7 + x)) = 55
184(-21 + 3x + (-7 * x + x * x)) = 55
184(-21 + 3x + (-7x + x2)) = 55

Combine like terms: 3x + -7x = -4x
184(-21 + -4x + x2) = 55
(-21 * 184 + -4x * 184 + x2 * 184) = 55
(-3864 + -736x + 184x2) = 55

Solving
-3864 + -736x + 184x2 = 55

Solving for variable 'x'.

Reorder the terms:
-3864 + -55 + -736x + 184x2 = 55 + -55

Combine like terms: -3864 + -55 = -3919
-3919 + -736x + 184x2 = 55 + -55

Combine like terms: 55 + -55 = 0
-3919 + -736x + 184x2 = 0

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

Divide each side by '184'.
-21.29891304 + -4x + x2 = 0

Move the constant term to the right:

Add '21.29891304' to each side of the equation.
-21.29891304 + -4x + 21.29891304 + x2 = 0 + 21.29891304

Reorder the terms:
-21.29891304 + 21.29891304 + -4x + x2 = 0 + 21.29891304

Combine like terms: -21.29891304 + 21.29891304 = 0.00000000
0.00000000 + -4x + x2 = 0 + 21.29891304
-4x + x2 = 0 + 21.29891304

Combine like terms: 0 + 21.29891304 = 21.29891304
-4x + x2 = 21.29891304

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = 21.29891304 + 4

Reorder the terms:
4 + -4x + x2 = 21.29891304 + 4

Combine like terms: 21.29891304 + 4 = 25.29891304
4 + -4x + x2 = 25.29891304

Factor a perfect square on the left side:
(x + -2)(x + -2) = 25.29891304

Calculate the square root of the right side: 5.029802485

Break this problem into two subproblems by setting 
(x + -2) equal to 5.029802485 and -5.029802485.

Subproblem 1

x + -2 = 5.029802485 Simplifying x + -2 = 5.029802485 Reorder the terms: -2 + x = 5.029802485 Solving -2 + x = 5.029802485 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 5.029802485 + 2 Combine like terms: -2 + 2 = 0 0 + x = 5.029802485 + 2 x = 5.029802485 + 2 Combine like terms: 5.029802485 + 2 = 7.029802485 x = 7.029802485 Simplifying x = 7.029802485

Subproblem 2

x + -2 = -5.029802485 Simplifying x + -2 = -5.029802485 Reorder the terms: -2 + x = -5.029802485 Solving -2 + x = -5.029802485 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -5.029802485 + 2 Combine like terms: -2 + 2 = 0 0 + x = -5.029802485 + 2 x = -5.029802485 + 2 Combine like terms: -5.029802485 + 2 = -3.029802485 x = -3.029802485 Simplifying x = -3.029802485

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.029802485, -3.029802485}

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