Answer:
6/7
Step-by-step explanation:
You need to find what number times itself gets you those two numbers. 6*6=36, 7*7=49.
a. √2⁴+3² = √16 + 9
= √25 = 5
The answer is a
b. √10²-2^6 = √100-64
= √36 = 6
The answer is b
Hope this helps.