- #1
autodidude
- 332
- 0
x^4+1
x^4+2x^2+1-2x^2
(x^2+1)^2-(\sqrt{2}x)^2
(x^2+\sqrt{2}x+1)(x^2-\sqrt{2}x+1)
In particular the second line, seems obvious now that I've seen it but I've never come across in a book before - what is it called?
x^4+2x^2+1-2x^2
(x^2+1)^2-(\sqrt{2}x)^2
(x^2+\sqrt{2}x+1)(x^2-\sqrt{2}x+1)
In particular the second line, seems obvious now that I've seen it but I've never come across in a book before - what is it called?
