12x-23-2+x^2+4x=49

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Solution for 12x-23-2+x^2+4x=49 equation:


Simplifying
12x + -23 + -2 + x2 + 4x = 49

Reorder the terms:
-23 + -2 + 12x + 4x + x2 = 49

Combine like terms: -23 + -2 = -25
-25 + 12x + 4x + x2 = 49

Combine like terms: 12x + 4x = 16x
-25 + 16x + x2 = 49

Solving
-25 + 16x + x2 = 49

Solving for variable 'x'.

Reorder the terms:
-25 + -49 + 16x + x2 = 49 + -49

Combine like terms: -25 + -49 = -74
-74 + 16x + x2 = 49 + -49

Combine like terms: 49 + -49 = 0
-74 + 16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '74' to each side of the equation.
-74 + 16x + 74 + x2 = 0 + 74

Reorder the terms:
-74 + 74 + 16x + x2 = 0 + 74

Combine like terms: -74 + 74 = 0
0 + 16x + x2 = 0 + 74
16x + x2 = 0 + 74

Combine like terms: 0 + 74 = 74
16x + x2 = 74

The x term is 16x.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16x + 64 + x2 = 74 + 64

Reorder the terms:
64 + 16x + x2 = 74 + 64

Combine like terms: 74 + 64 = 138
64 + 16x + x2 = 138

Factor a perfect square on the left side:
(x + 8)(x + 8) = 138

Calculate the square root of the right side: 11.747340124

Break this problem into two subproblems by setting 
(x + 8) equal to 11.747340124 and -11.747340124.

Subproblem 1

x + 8 = 11.747340124 Simplifying x + 8 = 11.747340124 Reorder the terms: 8 + x = 11.747340124 Solving 8 + x = 11.747340124 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 11.747340124 + -8 Combine like terms: 8 + -8 = 0 0 + x = 11.747340124 + -8 x = 11.747340124 + -8 Combine like terms: 11.747340124 + -8 = 3.747340124 x = 3.747340124 Simplifying x = 3.747340124

Subproblem 2

x + 8 = -11.747340124 Simplifying x + 8 = -11.747340124 Reorder the terms: 8 + x = -11.747340124 Solving 8 + x = -11.747340124 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = -11.747340124 + -8 Combine like terms: 8 + -8 = 0 0 + x = -11.747340124 + -8 x = -11.747340124 + -8 Combine like terms: -11.747340124 + -8 = -19.747340124 x = -19.747340124 Simplifying x = -19.747340124

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.747340124, -19.747340124}

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