x = -4, y = -2
$6x+3xy-5(x-y)=6*(-4)+3*(-4)*(-2)-5*[-4-(-2)]=-24+24-5*(-4+2)=-5*(-2)=+10$
9)
$6x+3xy-5(x-y)$ = (per $x=-4; y=-2$)
= $6·-4+3·-4·-2-5(-4-(-2))$ =
= $-24+24-5(-4+2)$ =
= $-5·-2=+10$
Home
Profilo
Menu