Basic mathmatical concepts( multiplication) Here is a conundrum I pondered upon while solving an equation - 
2x2 , generally means we are adding 2 two times , that is , 2+2 
Then , 
(-2)x(-2) , should go like this (-2)+(-2)=-4 , 
But , that's not true , the answer is +4 . 
Can anybody figure out and help me with it..

We need to refer to axioms and since $+1$ is the neutral element for product, the idea is that we have


*

*$(-2) \cdot (+1)=-2$
and then 


*

*$(-2) \cdot (-1)=+2 \implies (-2) \cdot (-2)=+4$
For a detailed discussion refer to  the related


*

*Why is negative times negative = positive?
