3x^2+9x=-17

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Solution for 3x^2+9x=-17 equation:


Simplifying
3x2 + 9x = -17

Reorder the terms:
9x + 3x2 = -17

Solving
9x + 3x2 = -17

Solving for variable 'x'.

Reorder the terms:
17 + 9x + 3x2 = -17 + 17

Combine like terms: -17 + 17 = 0
17 + 9x + 3x2 = 0

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

Divide each side by '3'.
5.666666667 + 3x + x2 = 0

Move the constant term to the right:

Add '-5.666666667' to each side of the equation.
5.666666667 + 3x + -5.666666667 + x2 = 0 + -5.666666667

Reorder the terms:
5.666666667 + -5.666666667 + 3x + x2 = 0 + -5.666666667

Combine like terms: 5.666666667 + -5.666666667 = 0.000000000
0.000000000 + 3x + x2 = 0 + -5.666666667
3x + x2 = 0 + -5.666666667

Combine like terms: 0 + -5.666666667 = -5.666666667
3x + x2 = -5.666666667

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 = -5.666666667 + 2.25

Reorder the terms:
2.25 + 3x + x2 = -5.666666667 + 2.25

Combine like terms: -5.666666667 + 2.25 = -3.416666667
2.25 + 3x + x2 = -3.416666667

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = -3.416666667

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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