Hate to be that guy but I need the extra credit! Reddit complex numbers r/theydidthemath

Here's a very classic false proof based on the idea that sqrt(ab) vs sqrt(a)*sqrt(b) if a and b are both negative. The math mistake is that sqrt(-1*-1) is not the same as sqrt(-1)*sqrt(-1) because we are not allowed to do so. I know I am like 3 days late but I hope the the person who posted this problem has gotten his/her extra credit already! Original post on Reddit r/theydidthemath:   / xzxkuhtnvx   0:00 "Proof" that 2=0? 3:48 "Proof" that i=1? The solution to "i=1"    • Be careful with i^(4/4)   Shop my math t-shirts & hoodies on Amazon: 👉 https://amzn.to/3qBeuw6 ----------------------------- I help students master the basics of math. You can show your support and help me create even better content by becoming a patron on Patreon 👉   / blackpenredpen  . Every bit of support means the world to me and motivates me to keep bringing you the best math lessons out there! Thank you! ----------------------------- #math #algebra #mathbasics