Yuragi-sou no Yuuna-san - Vol. 11 Ch. 90 - Let's Study, Hibari-chan

[MangaDex]

 

[HuevoPodrido]

Nice crossover on the cover.

 

[Alex-dono-sama]

anyone bother to solve the math problem to see if it was right?

 

[derpman568]

"uh oh I have to strip now"
thats the first mistake

 

[cknori]

@Alex-dono-sama yeah that's correct, but in strict terms you need an additional condition that x and y are both real numbers before you can separate the real parts from the imaginary parts