Question 813633
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
If f(x) = x^2 +7x 
  f(b+2)= (b+2)^2 + 7(b+2)   | Substituting (b+2) for x
Or      = b^2 + 4b + 4 + 7b + 14
0r      = b^2 + 11b + 18