Complete by solving the square:
2x^2−9x+9=0

Ax² + bx + c = 0
2x² - 9x + 9 = 0
2x² + (-9x) + 9 = 0
x = -b +/- √b² - 4ac
                2a
x = -(-9) +/- √9² - 4(2)(9)
                    2(2)
x = 9 +/- √81 - 72
               4
x = 9 +/- √9
           4
x = 9 +/- 3 
          4
x = 9 + 3    x = 9 - 3
         4                4
x = 12        x = 6
       4               4
x = 3          x = 3/2 or 1 1/2

How many people are we starting with? i will answer it's just i need to divide 8 by the total amount of people to get how many tables