sorry i ' m noob . Will do next time <| sep |> They know that you will buy them anyway . gotcha ! <| sep |> The corsair VS series is fine , it ' s on par with the 500 B I listed quality wise . So it isn ' t all as bad as I said at first . Still , I ' d really recommend putting the above build together yourself . It is as easy as putting together IKEA furniture and there are tons of instruction videos available on youtube . You could also ask my if you have any specific questions . Being able to put the parts together yourself will save you 150 pounds now but it will also save you a lot of money in the future . Putting a pc together for the first time shouldn ' t take more than an afternoon . <| sep |> Consider the following 3 x 32 31 x 32 but we also know that 3 x 32 3 x 3 x 3 33 so 3 x 32 312 we can generalize this to a more general propperty of exponentiation 3 n x 3 m 3 nmwhere n and m can be any number you want , so for example 35 x 38 313 . We can now write 31 x 31 30 if we plug in 31 3 we get 3 x 3 9 30 instead we must have 31 x 3 1 from which it immediately follows that 31 13 So , the fact that 31 13 immediately follows from the definition of 3 n