Is it possible to factorise this quadratic:
x^2+2x+3
Thanks in advance for any help!
Do you know what a discriminant is? The discriminant here is less than zero. Therefore x^2+2x+3=0 has no real solutions therefore x^2+2x+3 can't be factorised using real numbers.
Do you know what a discriminant is? The discriminant here is less than zero. Therefore x^2+2x+3=0 has no real solutions therefore x^2+2x+3 can't be factorised using real numbers.
He doesn't know, I talked to him by PM.
Also, he said it was maybe x²+2x-3.
sidenote
Hang on how does that give me 2x?
This question was because he thought that (a+b)²=a²+b²