Answer:
0
Step-by-step explanation:
Apply Only the Outside and Inside Method of the Foil Method.


Add them together

So our b value is 0.
Answer:
3i
Step-by-step explanation:
Using the rule of radicals
×
⇔ 
and
= i
Given

= 
=
×
× 
= 3 ×
× i
= 3i
Checking answer A:
distance from U to V = -2-(-11)=9
distance from U to W =7-(-2)=9 -> same distance !
checking answer B:
distance U-V : -2-(-8)=6
U-W : -2-(-6)=4 -> not the same distance
answer C :
U-V : -2-(-6)=4
U-W : 6-(-2)=8 -> not the same distance
answer D :
U-V : 0-(-2)=2
U-W : 2-(-2)=4 -> not the same distance
Conclusion : answer A
Answer:
First: sec(7pi/6)= -2square root3/3