2x(3-x)=11

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Solution for 2x(3-x)=11 equation:


Simplifying
2x(3 + -1x) = 11
(3 * 2x + -1x * 2x) = 11
(6x + -2x2) = 11

Solving
6x + -2x2 = 11

Solving for variable 'x'.

Reorder the terms:
-11 + 6x + -2x2 = 11 + -11

Combine like terms: 11 + -11 = 0
-11 + 6x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
5.5 + -3x + x2 = 0

Move the constant term to the right:

Add '-5.5' to each side of the equation.
5.5 + -3x + -5.5 + x2 = 0 + -5.5

Reorder the terms:
5.5 + -5.5 + -3x + x2 = 0 + -5.5

Combine like terms: 5.5 + -5.5 = 0.0
0.0 + -3x + x2 = 0 + -5.5
-3x + x2 = 0 + -5.5

Combine like terms: 0 + -5.5 = -5.5
-3x + x2 = -5.5

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = -5.5 + 2.25

Reorder the terms:
2.25 + -3x + x2 = -5.5 + 2.25

Combine like terms: -5.5 + 2.25 = -3.25
2.25 + -3x + x2 = -3.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = -3.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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