what is nine plus 10

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9+10=19
sqrt9 + sqrt10 = 3+ sqrt10
3+ sqrt10^2 = 13
f(13) = 9x + 10x
117+130 = 247
247-19 = 228
228/2 = 114
114x19 = 2166
114-9 = 103
2166/103 = 21

TL;DR maru is correct
 
Last edited:
ugh, been looking at this thread for a bit and still can't seem to find the answer!!!1111
 

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