﹙﹣2﹚²﹢2×﹙﹣3﹚﹢1/3解:原式=4-6+1/3 =-5/3
﹙﹣2﹚²﹢2×﹙﹣3﹚﹢1/3=4-6+1/3=-2+1/3=-(12/6)+2/3=-(10/6)=-(5/3)
(-2)²+2*(-3)+1/3????=4+(-6)+1/3=-2+1/3=-5/3