Why does a negative number multiplied by a negative number become a positive number?
It sounds like a rule you just memorizeโฆ but thereโs actually a simple logic behind it.
Start with a basic truth:
Every number plus its negative equals zero.
And any number multiplied by zero is still zero.
Consider this:
โb ร (a + (โa))=0, which implies
โba + (โb) ร (โa)=0, gives
(โb) ร (โa) = +ba
So a negative ร a negative must be positive.
@EcobankZW kindly assist. I deposited funds into my child's card who is outside Zimbabwe and the funds are not reflecting in his account. He needs to use the funds urgently
A Cameroonian has invented a noiseless generator that uses ONLY water to generate electricity
Mbah Ahmadou who hails from the north region of Cameroon has invented a generator which uses water to generate electricity. Steve Fah tested the generator, and it powered an air conditioner, a fan and a TV
He says, he has been working on the project for the past 4 years and it costed him over 13 million francs to finally succeed.
He says he can power the whole village with the water-generator but what he lacks now is proper investment.