x^2+5(x+12)=162

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Solution for x^2+5(x+12)=162 equation:


Simplifying
x2 + 5(x + 12) = 162

Reorder the terms:
x2 + 5(12 + x) = 162
x2 + (12 * 5 + x * 5) = 162
x2 + (60 + 5x) = 162

Reorder the terms:
60 + 5x + x2 = 162

Solving
60 + 5x + x2 = 162

Solving for variable 'x'.

Reorder the terms:
60 + -162 + 5x + x2 = 162 + -162

Combine like terms: 60 + -162 = -102
-102 + 5x + x2 = 162 + -162

Combine like terms: 162 + -162 = 0
-102 + 5x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '102' to each side of the equation.
-102 + 5x + 102 + x2 = 0 + 102

Reorder the terms:
-102 + 102 + 5x + x2 = 0 + 102

Combine like terms: -102 + 102 = 0
0 + 5x + x2 = 0 + 102
5x + x2 = 0 + 102

Combine like terms: 0 + 102 = 102
5x + x2 = 102

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = 102 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 102 + 6.25

Combine like terms: 102 + 6.25 = 108.25
6.25 + 5x + x2 = 108.25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 108.25

Calculate the square root of the right side: 10.404326023

Break this problem into two subproblems by setting 
(x + 2.5) equal to 10.404326023 and -10.404326023.

Subproblem 1

x + 2.5 = 10.404326023 Simplifying x + 2.5 = 10.404326023 Reorder the terms: 2.5 + x = 10.404326023 Solving 2.5 + x = 10.404326023 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 10.404326023 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 10.404326023 + -2.5 x = 10.404326023 + -2.5 Combine like terms: 10.404326023 + -2.5 = 7.904326023 x = 7.904326023 Simplifying x = 7.904326023

Subproblem 2

x + 2.5 = -10.404326023 Simplifying x + 2.5 = -10.404326023 Reorder the terms: 2.5 + x = -10.404326023 Solving 2.5 + x = -10.404326023 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -10.404326023 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -10.404326023 + -2.5 x = -10.404326023 + -2.5 Combine like terms: -10.404326023 + -2.5 = -12.904326023 x = -12.904326023 Simplifying x = -12.904326023

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.904326023, -12.904326023}

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