A Nice Olympaids Square Root Trick | 99% Students Don't Know This Trick

[@divyansh_07-re]

Easiest question I ever did in my life If you fail doing this problem just quit maths and take biology

[@R3dX5118]

Do 81 x 81 = 6561❌ Do 81 x 81 = (80+1)(80+1) = 6400 + 160 + 1 = 6561 ✅

[@hiob3970]

Why so complicate at the end?