Answer:
D
Step-by-step explanation:
a1=3, a2=6, a3=12, a4=24, a5=48
a7=a*r^6=192
a10=a*r^9=1536, r^3=8, r=2 and a=3
3 x 2 + 2 x − 2
c
it is non real if x²-36<0
x²<36
|x|<6
so -6<x<6
