36=9x-x^2

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Solution for 36=9x-x^2 equation:


Simplifying
36 = 9x + -1x2

Solving
36 = 9x + -1x2

Solving for variable 'x'.

Reorder the terms:
36 + -9x + x2 = 9x + -9x + -1x2 + x2

Combine like terms: 9x + -9x = 0
36 + -9x + x2 = 0 + -1x2 + x2
36 + -9x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
36 + -9x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-36' to each side of the equation.
36 + -9x + -36 + x2 = 0 + -36

Reorder the terms:
36 + -36 + -9x + x2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -9x + x2 = 0 + -36
-9x + x2 = 0 + -36

Combine like terms: 0 + -36 = -36
-9x + x2 = -36

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 = -36 + 20.25

Reorder the terms:
20.25 + -9x + x2 = -36 + 20.25

Combine like terms: -36 + 20.25 = -15.75
20.25 + -9x + x2 = -15.75

Factor a perfect square on the left side:
(x + -4.5)(x + -4.5) = -15.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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