9x+x^2=32

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Solution for 9x+x^2=32 equation:


Simplifying
9x + x2 = 32

Solving
9x + x2 = 32

Solving for variable 'x'.

Reorder the terms:
-32 + 9x + x2 = 32 + -32

Combine like terms: 32 + -32 = 0
-32 + 9x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '32' to each side of the equation.
-32 + 9x + 32 + x2 = 0 + 32

Reorder the terms:
-32 + 32 + 9x + x2 = 0 + 32

Combine like terms: -32 + 32 = 0
0 + 9x + x2 = 0 + 32
9x + x2 = 0 + 32

Combine like terms: 0 + 32 = 32
9x + x2 = 32

The x term is 9x.  Take half its coefficient (4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
9x + 20.25 + x2 = 32 + 20.25

Reorder the terms:
20.25 + 9x + x2 = 32 + 20.25

Combine like terms: 32 + 20.25 = 52.25
20.25 + 9x + x2 = 52.25

Factor a perfect square on the left side:
(x + 4.5)(x + 4.5) = 52.25

Calculate the square root of the right side: 7.228416147

Break this problem into two subproblems by setting 
(x + 4.5) equal to 7.228416147 and -7.228416147.

Subproblem 1

x + 4.5 = 7.228416147 Simplifying x + 4.5 = 7.228416147 Reorder the terms: 4.5 + x = 7.228416147 Solving 4.5 + x = 7.228416147 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + x = 7.228416147 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + x = 7.228416147 + -4.5 x = 7.228416147 + -4.5 Combine like terms: 7.228416147 + -4.5 = 2.728416147 x = 2.728416147 Simplifying x = 2.728416147

Subproblem 2

x + 4.5 = -7.228416147 Simplifying x + 4.5 = -7.228416147 Reorder the terms: 4.5 + x = -7.228416147 Solving 4.5 + x = -7.228416147 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + x = -7.228416147 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + x = -7.228416147 + -4.5 x = -7.228416147 + -4.5 Combine like terms: -7.228416147 + -4.5 = -11.728416147 x = -11.728416147 Simplifying x = -11.728416147

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.728416147, -11.728416147}

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