Thursday, 7 March 2013

How do you work out what -y + y is?

What is -y +y?
I remember some sort of methos where
2 minus = +
2 plus = +
minus and plus= -
plus and minus= -
But i can't remember if that is for multiplying or adding?!?
Please help! Thanks :)

What is a VPN?


VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).

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