Answer: 5 or c
Step-by-step explanation:
Hai , you can use Pythagoras Theorem to find the length which is hypotenuse.
It will be 7^2 + 3^2 = 58
square root 58 and you will get 7.62
Hope this helps and i am sorry if my answer was wrong .
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I hope you are able to solve the question on your one shortly!
Since the exponent is on the outside of the paranthesis, you'd have to multiply it by everything on the inside: a^m x b^m