Question 637416
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
9y^2 + 6y - 8x^2 - 24x = 89   |Completingthe Squares
9(y + 1/3)^2 -8(x + 3/2)^2 = 89 + 1 - 18 = 72
{{{(y + 1/3)^2/8 -(x + 3/2)^2/9  = 1}}}