(-2)^2 = 4Originally posted by gcn_zelda
Ever since Algebra, I've been taught that -2^2=4
On another message forum, however there was a debate that -2^2=-4.
They came up with the conclusion that:
-2^2 is the same as -1(2^2) which equals -1(4) equaling -4.
I just wonder what the correct answer is.
That is an incorrect assumption. You can't just start factoring numbers and taking them out of bracks with exponents, it just doens't work that way. It's hard to put into words so just look at the example.2^2 is the same as -1(2^2)
Then, I think, you have been taught wrongly. Or you remember wrongly.Ever since Algebra, I've been taught that -2^2=4