ive been here for 2 years

[dtewi]

marciosmg said:

Im joking, dtewi. Heres why its wrong:

 

The square root of a number elevated to square (again, not sure on english) is the module of that number. So:

(4 - (9/2))2 = (5 - (9/2))2

You cant just remove the square and eliminate the 9/2. Actually is this:

!4 - (9/2)! = !5 - (9/2)!  (! stands for the module)

!-0,5! = !0,5!

0,5 = 0,5

See?

Oh, that was to the power of two?

The notation for "to the power of" is ^.