x(9-x)=143

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Solution for x(9-x)=143 equation:


Simplifying
x(9 + -1x) = 143
(9 * x + -1x * x) = 143
(9x + -1x2) = 143

Solving
9x + -1x2 = 143

Solving for variable 'x'.

Reorder the terms:
-143 + 9x + -1x2 = 143 + -143

Combine like terms: 143 + -143 = 0
-143 + 9x + -1x2 = 0

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

Divide each side by '-1'.
143 + -9x + x2 = 0

Move the constant term to the right:

Add '-143' to each side of the equation.
143 + -9x + -143 + x2 = 0 + -143

Reorder the terms:
143 + -143 + -9x + x2 = 0 + -143

Combine like terms: 143 + -143 = 0
0 + -9x + x2 = 0 + -143
-9x + x2 = 0 + -143

Combine like terms: 0 + -143 = -143
-9x + x2 = -143

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 = -143 + 20.25

Reorder the terms:
20.25 + -9x + x2 = -143 + 20.25

Combine like terms: -143 + 20.25 = -122.75
20.25 + -9x + x2 = -122.75

Factor a perfect square on the left side:
(x + -4.5)(x + -4.5) = -122.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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