3x(7-x)=44

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Solution for 3x(7-x)=44 equation:


Simplifying
3x(7 + -1x) = 44
(7 * 3x + -1x * 3x) = 44
(21x + -3x2) = 44

Solving
21x + -3x2 = 44

Solving for variable 'x'.

Reorder the terms:
-44 + 21x + -3x2 = 44 + -44

Combine like terms: 44 + -44 = 0
-44 + 21x + -3x2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
14.66666667 + -7x + x2 = 0

Move the constant term to the right:

Add '-14.66666667' to each side of the equation.
14.66666667 + -7x + -14.66666667 + x2 = 0 + -14.66666667

Reorder the terms:
14.66666667 + -14.66666667 + -7x + x2 = 0 + -14.66666667

Combine like terms: 14.66666667 + -14.66666667 = 0.00000000
0.00000000 + -7x + x2 = 0 + -14.66666667
-7x + x2 = 0 + -14.66666667

Combine like terms: 0 + -14.66666667 = -14.66666667
-7x + x2 = -14.66666667

The x term is -7x.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7x + 12.25 + x2 = -14.66666667 + 12.25

Reorder the terms:
12.25 + -7x + x2 = -14.66666667 + 12.25

Combine like terms: -14.66666667 + 12.25 = -2.41666667
12.25 + -7x + x2 = -2.41666667

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = -2.41666667

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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