SOLUTION: -90s^2+55st+35t^2 divided by -5s+5t

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Question 304796: -90s^2+55st+35t^2 divided by -5s+5t
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
%28-90s%5E2%2B55st%2B35t%5E2%29%2F%28-5s%2B5t%29
:
Factor, then cancel out the 5
5%28-18s%5E2%2B11st%2B7t%5E2%29%2F5%28-s%2Bt%29 = %28-18s%5E2%2B11st%2B7t%5E2%29%2F%28-s%2Bt%29
:
Factor out -1 to change the signs
%28-1%29%2818s%5E2-11st-7t%5E2%29%2F-1%28s-t%29 = %2818s%5E2-11st-7t%5E2%29%2F%28s-t%29
:
Factor the numerator, cancel the (s-t)'s
%28%2818s%2B7t%29%28s-t%29%29%2F%28s-t%29 = (18s + 7t)