HELP ME PLEAASE ITS URGENT!!! WILL GIVE BRAINLIEST

On a test, Marcus is asked to simplify . Here is his work:


√128 = √16 · √8 = 4√8


Which statement best describes Marcus' answer?


He is incorrect because 16 times 8 is not 128.

He is incorrect because he did not use the largest perfect square.

He is incorrect because the 4 and the 8 should be switched around in his answer.

He is correct.