I will mark as brainliest if you can answer. :)
1 answer:
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Answer:
x = 6, y = 45
Step-by-step explanation:

sqrt(192)
sqrt( 16*12)
sqrt(16) * sqrt(12)
4 * sqrt(12)
4 * sqrt(4*3)
4 * sqrt(4) * sqrt(3)
4*2* sqrt(3)
8 sqrt(3)
Answer:
4+8=12
Step-by-step explanation:
All possibilities = 9!
possibilities that harry sits at an end = 8! + 8!
possibilities that harry doesn't sit at an end = 9! - 8! -8!