Intresting math question ~.~

[Uzu]

so this is the small problem my friend doesn't want to understand (he is also registred at ko4life but that smartass thinks him>me )

I say;
-2^2= -4 and (-2)^2= 4 are not the same because in the second case the -2 is in brackets and -2 x -2 = 4 as everyone knows I think.

In the first case the -2 is not in brackets. I remember very good that my grammar school math teacher said once that if -2 is not in the brackets then

-2^2 = -(2^2) = -2 x 2 = -4


Can you prove him that I am right? :blink:

[Atros]

hahaha^^

[Uzu]

hahaha^^[/b]

noob petimusun just post to say haha

[tHeUnBeAtAbLe]

so this is the small problem my friend doesn't want to understand (he is also registred at ko4life but that smartass thinks him>me )

I say;
-2^2= -4 and (-2)^2= 4 are not the same because in the second case the -2 is in brackets and -2 x -2 = 4 as everyone knows I think.

In the first case the -2 is not in brackets. I remember very good that my grammar school math teacher said once that if -2 is not in the brackets then

-2^2 = -(2^2) = -2 x 2 = -4
Can you prove him that I am right? :blink:[/b]

true

[Dark3lf]

so this is the small problem my friend doesn't want to understand (he is also registred at ko4life but that smartass thinks him>me )

I say;
-2^2= -4 and (-2)^2= 4 are not the same because in the second case the -2 is in brackets and -2 x -2 = 4 as everyone knows I think.

In the first case the -2 is not in brackets. I remember very good that my grammar school math teacher said once that if -2 is not in the brackets then

-2^2 = -(2^2) = -2 x 2 = -4
Can you prove him that I am right? :blink:[/b]

-2^2 is the same as -1*(2)^2
So you're right on this one :P

[soenne]

Cuz

(-2)² = -2 x -2 = you use the minus twice = gets positive
-2² = - (2x2) = you use the minus once = stays negative

[KaZaM]

Even my 9 y/o sister knows this >.>

[:Blaster:]

It's kinda insteresting... :lol:

[DrUnKeNmAsTeR]

let math lessons in school and knight online in ko4life

relax ^^

[CYANEXTIME]

Cuz

(-2)² = -2 x -2 = you use the minus twice = gets positive
-2² = - (2x2) = you use the minus once = stays negative[/b]

Yeah, and (-2)² = more than -4!

Tell us something we don't know lol

[soenne]

Yeah, and (-2)² = more than -4!

Tell us something we don't know lol [/b]

He asked

Can you proof me that I'm right.

I'm pretty positive I've proofed him hes right lol

[CYANEXTIME]

Actually I re read the question and you we're right.....didnt know his friend wouldnt understand the part with the brackets