(x+1)(x+2)=180

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Solution for (x+1)(x+2)=180 equation:


Simplifying
(x + 1)(x + 2) = 180

Reorder the terms:
(1 + x)(x + 2) = 180

Reorder the terms:
(1 + x)(2 + x) = 180

Multiply (1 + x) * (2 + x)
(1(2 + x) + x(2 + x)) = 180
((2 * 1 + x * 1) + x(2 + x)) = 180
((2 + 1x) + x(2 + x)) = 180
(2 + 1x + (2 * x + x * x)) = 180
(2 + 1x + (2x + x2)) = 180

Combine like terms: 1x + 2x = 3x
(2 + 3x + x2) = 180

Solving
2 + 3x + x2 = 180

Solving for variable 'x'.

Reorder the terms:
2 + -180 + 3x + x2 = 180 + -180

Combine like terms: 2 + -180 = -178
-178 + 3x + x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-178 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '178' to each side of the equation.
-178 + 3x + 178 + x2 = 0 + 178

Reorder the terms:
-178 + 178 + 3x + x2 = 0 + 178

Combine like terms: -178 + 178 = 0
0 + 3x + x2 = 0 + 178
3x + x2 = 0 + 178

Combine like terms: 0 + 178 = 178
3x + x2 = 178

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 = 178 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 178 + 2.25

Combine like terms: 178 + 2.25 = 180.25
2.25 + 3x + x2 = 180.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 180.25

Calculate the square root of the right side: 13.425721582

Break this problem into two subproblems by setting 
(x + 1.5) equal to 13.425721582 and -13.425721582.

Subproblem 1

x + 1.5 = 13.425721582 Simplifying x + 1.5 = 13.425721582 Reorder the terms: 1.5 + x = 13.425721582 Solving 1.5 + x = 13.425721582 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 = 13.425721582 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 13.425721582 + -1.5 x = 13.425721582 + -1.5 Combine like terms: 13.425721582 + -1.5 = 11.925721582 x = 11.925721582 Simplifying x = 11.925721582

Subproblem 2

x + 1.5 = -13.425721582 Simplifying x + 1.5 = -13.425721582 Reorder the terms: 1.5 + x = -13.425721582 Solving 1.5 + x = -13.425721582 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 = -13.425721582 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -13.425721582 + -1.5 x = -13.425721582 + -1.5 Combine like terms: -13.425721582 + -1.5 = -14.925721582 x = -14.925721582 Simplifying x = -14.925721582

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.925721582, -14.925721582}

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