x^2+15x+324=0

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Solution for x^2+15x+324=0 equation:


Simplifying
x2 + 15x + 324 = 0

Reorder the terms:
324 + 15x + x2 = 0

Solving
324 + 15x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-324' to each side of the equation.
324 + 15x + -324 + x2 = 0 + -324

Reorder the terms:
324 + -324 + 15x + x2 = 0 + -324

Combine like terms: 324 + -324 = 0
0 + 15x + x2 = 0 + -324
15x + x2 = 0 + -324

Combine like terms: 0 + -324 = -324
15x + x2 = -324

The x term is 15x.  Take half its coefficient (7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
15x + 56.25 + x2 = -324 + 56.25

Reorder the terms:
56.25 + 15x + x2 = -324 + 56.25

Combine like terms: -324 + 56.25 = -267.75
56.25 + 15x + x2 = -267.75

Factor a perfect square on the left side:
(x + 7.5)(x + 7.5) = -267.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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