5x^2+18x+45=0

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Solution for 5x^2+18x+45=0 equation:


Simplifying
5x2 + 18x + 45 = 0

Reorder the terms:
45 + 18x + 5x2 = 0

Solving
45 + 18x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
9 + 3.6x + x2 = 0

Move the constant term to the right:

Add '-9' to each side of the equation.
9 + 3.6x + -9 + x2 = 0 + -9

Reorder the terms:
9 + -9 + 3.6x + x2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 3.6x + x2 = 0 + -9
3.6x + x2 = 0 + -9

Combine like terms: 0 + -9 = -9
3.6x + x2 = -9

The x term is 3.6x.  Take half its coefficient (1.8).
Square it (3.24) and add it to both sides.

Add '3.24' to each side of the equation.
3.6x + 3.24 + x2 = -9 + 3.24

Reorder the terms:
3.24 + 3.6x + x2 = -9 + 3.24

Combine like terms: -9 + 3.24 = -5.76
3.24 + 3.6x + x2 = -5.76

Factor a perfect square on the left side:
(x + 1.8)(x + 1.8) = -5.76

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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