<u>Answer:</u>
<u>Step-by-step explanation:</u>
We can use the following rule of surds to solve the problem:
,
which means that when multiplying two numbers with the same bases, we can simply add their powers while keeping the base the same.
Applying this rule:

⇒ 
⇒
Answer:
A
Step-by-step explanation:
I think it's A because it mostly multiplies then adds and subtracts so you get your answer doing this
Answer:
2³
Step-by-step explanation:
8 = 2 × 2 × 2 = 2³
Answer:
it reduces to 7:8
Step-by-step explanation:
just put it like a fraction like 140/160. it simplifies to 7/8