16x+120=x^2

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Solution for 16x+120=x^2 equation:


Simplifying
16x + 120 = x2

Reorder the terms:
120 + 16x = x2

Solving
120 + 16x = x2

Solving for variable 'x'.

Combine like terms: x2 + -1x2 = 0
120 + 16x + -1x2 = 0

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

Divide each side by '-1'.
-120 + -16x + x2 = 0

Move the constant term to the right:

Add '120' to each side of the equation.
-120 + -16x + 120 + x2 = 0 + 120

Reorder the terms:
-120 + 120 + -16x + x2 = 0 + 120

Combine like terms: -120 + 120 = 0
0 + -16x + x2 = 0 + 120
-16x + x2 = 0 + 120

Combine like terms: 0 + 120 = 120
-16x + x2 = 120

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 = 120 + 64

Reorder the terms:
64 + -16x + x2 = 120 + 64

Combine like terms: 120 + 64 = 184
64 + -16x + x2 = 184

Factor a perfect square on the left side:
(x + -8)(x + -8) = 184

Calculate the square root of the right side: 13.564659966

Break this problem into two subproblems by setting 
(x + -8) equal to 13.564659966 and -13.564659966.

Subproblem 1

x + -8 = 13.564659966 Simplifying x + -8 = 13.564659966 Reorder the terms: -8 + x = 13.564659966 Solving -8 + x = 13.564659966 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 = 13.564659966 + 8 Combine like terms: -8 + 8 = 0 0 + x = 13.564659966 + 8 x = 13.564659966 + 8 Combine like terms: 13.564659966 + 8 = 21.564659966 x = 21.564659966 Simplifying x = 21.564659966

Subproblem 2

x + -8 = -13.564659966 Simplifying x + -8 = -13.564659966 Reorder the terms: -8 + x = -13.564659966 Solving -8 + x = -13.564659966 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 = -13.564659966 + 8 Combine like terms: -8 + 8 = 0 0 + x = -13.564659966 + 8 x = -13.564659966 + 8 Combine like terms: -13.564659966 + 8 = -5.564659966 x = -5.564659966 Simplifying x = -5.564659966

Solution

The solution to the problem is based on the solutions from the subproblems. x = {21.564659966, -5.564659966}

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