Answer:
-4
Step-by-step explanation:
So i think here you would FOIL. so -5x^2+10x-5x+10 and then combine like terms :)
Given that <span>the number of possible handshakes within a group of n people is given by the equation:
</span>

<span>
Given that there are 105 people at a party, the number of possible handshakes is given by:
</span>

<span>
</span>
Answer:
I think the answer is
Step-by-step explanation:
1/9, 1/2, 0.35, 0.25, 0.1