How many real-number solutions does the equation have?

0 equals 3 x squared plus 18 x plus 27

The equation 0 = 3x^2 + 18x + 27 can be simplified by dividing all terms by 3 to get:

0 = x^2 + 6x + 9

This can be further simplified to:

0 = (x + 3)^2

The equation has one real number solution, x = -3.