neonwarrior

Hello everyone, Why -2 .(-3) = 6 Why is it positive? Why we accept that (minus sign) times (minus sign) is positive ? What is its origin? Thanks in advance

Lol

Hello everyone, When you have square root of (-2)^10 which is the result? Because if I use the fraction notation results (-2)^(10/2) = (-2)^5 .... a negative number. On the other hand, if the power is calculated first the result is positive. Thanks in advance

Hello everyone, Could you possibly enlighten me which principle soil ph meters use? I understand that they have an aluminum and copper electrodes. But I cannot find any information about this one (only the one with silver wire coated with AgCl) Thanks in advance