0=x^2+16x-48

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Solution for 0=x^2+16x-48 equation:


Simplifying
0 = x2 + 16x + -48

Reorder the terms:
0 = -48 + 16x + x2

Solving
0 = -48 + 16x + x2

Solving for variable 'x'.

Combine like terms: 0 + 48 = 48
48 + -16x + -1x2 = -48 + 16x + x2 + 48 + -16x + -1x2

Reorder the terms:
48 + -16x + -1x2 = -48 + 48 + 16x + -16x + x2 + -1x2

Combine like terms: -48 + 48 = 0
48 + -16x + -1x2 = 0 + 16x + -16x + x2 + -1x2
48 + -16x + -1x2 = 16x + -16x + x2 + -1x2

Combine like terms: 16x + -16x = 0
48 + -16x + -1x2 = 0 + x2 + -1x2
48 + -16x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
48 + -16x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-48 + 16x + x2 = 0

Move the constant term to the right:

Add '48' to each side of the equation.
-48 + 16x + 48 + x2 = 0 + 48

Reorder the terms:
-48 + 48 + 16x + x2 = 0 + 48

Combine like terms: -48 + 48 = 0
0 + 16x + x2 = 0 + 48
16x + x2 = 0 + 48

Combine like terms: 0 + 48 = 48
16x + x2 = 48

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 = 48 + 64

Reorder the terms:
64 + 16x + x2 = 48 + 64

Combine like terms: 48 + 64 = 112
64 + 16x + x2 = 112

Factor a perfect square on the left side:
(x + 8)(x + 8) = 112

Calculate the square root of the right side: 10.583005244

Break this problem into two subproblems by setting 
(x + 8) equal to 10.583005244 and -10.583005244.

Subproblem 1

x + 8 = 10.583005244 Simplifying x + 8 = 10.583005244 Reorder the terms: 8 + x = 10.583005244 Solving 8 + x = 10.583005244 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 = 10.583005244 + -8 Combine like terms: 8 + -8 = 0 0 + x = 10.583005244 + -8 x = 10.583005244 + -8 Combine like terms: 10.583005244 + -8 = 2.583005244 x = 2.583005244 Simplifying x = 2.583005244

Subproblem 2

x + 8 = -10.583005244 Simplifying x + 8 = -10.583005244 Reorder the terms: 8 + x = -10.583005244 Solving 8 + x = -10.583005244 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 = -10.583005244 + -8 Combine like terms: 8 + -8 = 0 0 + x = -10.583005244 + -8 x = -10.583005244 + -8 Combine like terms: -10.583005244 + -8 = -18.583005244 x = -18.583005244 Simplifying x = -18.583005244

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.583005244, -18.583005244}

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