Answer:b
Step-by-step explanation:
I also think that the answer is B too
Answer:

Step-by-step explanation:
Step 1: Simplify square roots
√72 = 6√2
√50 = 5√2
So, 
Step 2: Cancel like terms

Step 3: Rewrite
And we should get our answer!
Answer:

Step-by-step explanation:
We have to simplify the given exponential exponents.
Exponential Properties:
Simplification takes place in the following manner:
a)

b)

c)

d)
