(x+1)(x+2)=323

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Solution for (x+1)(x+2)=323 equation:


Simplifying
(x + 1)(x + 2) = 323

Reorder the terms:
(1 + x)(x + 2) = 323

Reorder the terms:
(1 + x)(2 + x) = 323

Multiply (1 + x) * (2 + x)
(1(2 + x) + x(2 + x)) = 323
((2 * 1 + x * 1) + x(2 + x)) = 323
((2 + 1x) + x(2 + x)) = 323
(2 + 1x + (2 * x + x * x)) = 323
(2 + 1x + (2x + x2)) = 323

Combine like terms: 1x + 2x = 3x
(2 + 3x + x2) = 323

Solving
2 + 3x + x2 = 323

Solving for variable 'x'.

Reorder the terms:
2 + -323 + 3x + x2 = 323 + -323

Combine like terms: 2 + -323 = -321
-321 + 3x + x2 = 323 + -323

Combine like terms: 323 + -323 = 0
-321 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '321' to each side of the equation.
-321 + 3x + 321 + x2 = 0 + 321

Reorder the terms:
-321 + 321 + 3x + x2 = 0 + 321

Combine like terms: -321 + 321 = 0
0 + 3x + x2 = 0 + 321
3x + x2 = 0 + 321

Combine like terms: 0 + 321 = 321
3x + x2 = 321

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 321 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 321 + 2.25

Combine like terms: 321 + 2.25 = 323.25
2.25 + 3x + x2 = 323.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 323.25

Calculate the square root of the right side: 17.979154596

Break this problem into two subproblems by setting 
(x + 1.5) equal to 17.979154596 and -17.979154596.

Subproblem 1

x + 1.5 = 17.979154596 Simplifying x + 1.5 = 17.979154596 Reorder the terms: 1.5 + x = 17.979154596 Solving 1.5 + x = 17.979154596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 17.979154596 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 17.979154596 + -1.5 x = 17.979154596 + -1.5 Combine like terms: 17.979154596 + -1.5 = 16.479154596 x = 16.479154596 Simplifying x = 16.479154596

Subproblem 2

x + 1.5 = -17.979154596 Simplifying x + 1.5 = -17.979154596 Reorder the terms: 1.5 + x = -17.979154596 Solving 1.5 + x = -17.979154596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -17.979154596 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -17.979154596 + -1.5 x = -17.979154596 + -1.5 Combine like terms: -17.979154596 + -1.5 = -19.479154596 x = -19.479154596 Simplifying x = -19.479154596

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.479154596, -19.479154596}

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