Question

Efectuati adunarea si aflati DVA-ul:
$\frac{1}{X ^{2}-3X } + \frac{1}{X} + \frac{1}{X-3}$
va rog frumos , e urgent, de asemenea dau coroana

Answer 1

1/(x²-3x)+1/x+1/(x-3)=
=(1+x-3+x)/x(x-3)=
=(2x-2)/x(x-3)=
=2(x-1)/x(x-3)
x≠0
x≠3