How did they break the relation $2x^2-x<0$ to $x<0$ and $2x-1>0$?
I thought it would be something like
$x<0$ & $2x-1<0$
did I miss something in high school?
#[High School Algebra] Relations
mild snow
grim socketBOT
brisk gazelle
How did they break the relation $2x^2-x<0$ to $x<0$ and $2x-1>0$?
I thought it...
the product of two numbers can only be negative if one is negative and other is positive
so if x(2x-1)<0 then either x is positive 2x-1 negative or x negative 2x-1 positive (?)