Răspunsuri

2014-11-04T17:51:05+02:00
/- impartire; ^-putere; *-inmultire
[(-1/2)(1/4)]:(-1/2)^4= -1/8:(-1/16)= -1/8 * (-16)= 2 => x=2
x-1/x= 2-1/2= 1/2