[(-3ab)²×a³+2a³×(-3ab)³×1/2b]÷(3a²b²)² ,其中a=1/3,b=-b=-(1/2)
问题描述:
[(-3ab)²×a³+2a³×(-3ab)³×1/2b]÷(3a²b²)² ,其中a=1/3,b=-
b=-(1/2)
答
[(-3ab)²×a³+2a³×(-3ab)³×1/2b]÷(3a²b²)² ,其中a=1/3,b=-
b=-(1/2)