9x^2+15x+30=0

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Solution for 9x^2+15x+30=0 equation: 


Simplifying
9x2 + 15x + 30 = 0

Reorder the terms:
30 + 15x + 9x2 = 0

Solving
30 + 15x + 9x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(10 + 5x + 3x2) = 0

Ignore the factor 3.

Subproblem 1
Set the factor '(10 + 5x + 3x2)' equal to zero and attempt to solve:

Simplifying
10 + 5x + 3x2 = 0

Solving
10 + 5x + 3x2 = 0

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

Divide each side by '3'.
3.333333333 + 1.666666667x + x2 = 0

Move the constant term to the right:

Add '-3.333333333' to each side of the equation.
3.333333333 + 1.666666667x + -3.333333333 + x2 = 0 + -3.333333333

Reorder the terms:
3.333333333 + -3.333333333 + 1.666666667x + x2 = 0 + -3.333333333

Combine like terms: 3.333333333 + -3.333333333 = 0.000000000
0.000000000 + 1.666666667x + x2 = 0 + -3.333333333
1.666666667x + x2 = 0 + -3.333333333

Combine like terms: 0 + -3.333333333 = -3.333333333
1.666666667x + x2 = -3.333333333

The x term is 1.666666667x.  Take half its coefficient (0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
1.666666667x + 0.6944444447 + x2 = -3.333333333 + 0.6944444447

Reorder the terms:
0.6944444447 + 1.666666667x + x2 = -3.333333333 + 0.6944444447

Combine like terms: -3.333333333 + 0.6944444447 = -2.6388888883
0.6944444447 + 1.666666667x + x2 = -2.6388888883

Factor a perfect square on the left side:
(x + 0.8333333335)(x + 0.8333333335) = -2.6388888883

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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