11x+5(12-x^2)=990

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Solution for 11x+5(12-x^2)=990 equation:


Simplifying
11x + 5(12 + -1x2) = 990
11x + (12 * 5 + -1x2 * 5) = 990
11x + (60 + -5x2) = 990

Reorder the terms:
60 + 11x + -5x2 = 990

Solving
60 + 11x + -5x2 = 990

Solving for variable 'x'.

Reorder the terms:
60 + -990 + 11x + -5x2 = 990 + -990

Combine like terms: 60 + -990 = -930
-930 + 11x + -5x2 = 990 + -990

Combine like terms: 990 + -990 = 0
-930 + 11x + -5x2 = 0

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
186 + -2.2x + x2 = 0

Move the constant term to the right:

Add '-186' to each side of the equation.
186 + -2.2x + -186 + x2 = 0 + -186

Reorder the terms:
186 + -186 + -2.2x + x2 = 0 + -186

Combine like terms: 186 + -186 = 0
0 + -2.2x + x2 = 0 + -186
-2.2x + x2 = 0 + -186

Combine like terms: 0 + -186 = -186
-2.2x + x2 = -186

The x term is -2.2x.  Take half its coefficient (-1.1).
Square it (1.21) and add it to both sides.

Add '1.21' to each side of the equation.
-2.2x + 1.21 + x2 = -186 + 1.21

Reorder the terms:
1.21 + -2.2x + x2 = -186 + 1.21

Combine like terms: -186 + 1.21 = -184.79
1.21 + -2.2x + x2 = -184.79

Factor a perfect square on the left side:
(x + -1.1)(x + -1.1) = -184.79

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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