Answer:
Given the expression:
1.

we know:

then;

Therefore, the value of expression
is -16 i.e negative.
2.

we know:


then;

Therefore, the expression
is 16 i.e Positive.
3.

we know:

then;

Therefore, the expression
is 16 i.e Positive.
1. 6 7/18
2. Either 15 19/12 or 16 7/12 i dont know if it can be improper
3. 2 1/24
4. 4 1/10
Hope this helps
Answer:
Option B
Step-by-step explanation: