Question 636837
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
x^4+10x^3-2x^2+90x-99
Recognizing the x = 1 and x = -11 are zeroes
Consecutively Applying Synthetic Division yields
  x^2 + 9 =0
  x^2 = -9
  x = ± 3i