x^2+10x=27

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Solution for x^2+10x=27 equation:


Simplifying
x2 + 10x = 27

Reorder the terms:
10x + x2 = 27

Solving
10x + x2 = 27

Solving for variable 'x'.

Reorder the terms:
-27 + 10x + x2 = 27 + -27

Combine like terms: 27 + -27 = 0
-27 + 10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '27' to each side of the equation.
-27 + 10x + 27 + x2 = 0 + 27

Reorder the terms:
-27 + 27 + 10x + x2 = 0 + 27

Combine like terms: -27 + 27 = 0
0 + 10x + x2 = 0 + 27
10x + x2 = 0 + 27

Combine like terms: 0 + 27 = 27
10x + x2 = 27

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = 27 + 25

Reorder the terms:
25 + 10x + x2 = 27 + 25

Combine like terms: 27 + 25 = 52
25 + 10x + x2 = 52

Factor a perfect square on the left side:
(x + 5)(x + 5) = 52

Calculate the square root of the right side: 7.211102551

Break this problem into two subproblems by setting 
(x + 5) equal to 7.211102551 and -7.211102551.

Subproblem 1

x + 5 = 7.211102551 Simplifying x + 5 = 7.211102551 Reorder the terms: 5 + x = 7.211102551 Solving 5 + x = 7.211102551 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 7.211102551 + -5 Combine like terms: 5 + -5 = 0 0 + x = 7.211102551 + -5 x = 7.211102551 + -5 Combine like terms: 7.211102551 + -5 = 2.211102551 x = 2.211102551 Simplifying x = 2.211102551

Subproblem 2

x + 5 = -7.211102551 Simplifying x + 5 = -7.211102551 Reorder the terms: 5 + x = -7.211102551 Solving 5 + x = -7.211102551 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -7.211102551 + -5 Combine like terms: 5 + -5 = 0 0 + x = -7.211102551 + -5 x = -7.211102551 + -5 Combine like terms: -7.211102551 + -5 = -12.211102551 x = -12.211102551 Simplifying x = -12.211102551

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.211102551, -12.211102551}

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