Answer:

Step-by-step explanation:
√a^4 is the same as:
√a × √a × √a × √a
group them as 2 pairs of
(√a × √a) × (√a × √a)
which makes
a × a
which is the same as 
Answer:
23.3
Step-by-step explanation:
If there is no other context, you could use the points (0,0) and (3,-5) because you move down 5 and to the right 3.
Um I think 4 i hope this helps
112 <span>≥ b+128
First: You would subtract 128 on both sides of your sign
You would get: -16</span><span>≥ b <That is your answer
HOPE THIS HELPS! ^_^</span>