Answer:
c
Step-by-step explanation:
as the roots are imaginary so it does not intersect x-axis.
C
Answer:
√16
Step-by-step explanation:
√15=√(3·5)
√16=√4²=4
√21=√(3·7)
√22=√(2·11)
All together for this one?
Each sheet of wallpaper can get 12/(1/3)=36 pieces, since there're 3 in total, we have 36*3 = 108 pieces
