小括号里是次方,大括号相当于小括号,高手应该看的懂.
小括号里是次方,大括号相当于小括号,高手应该看的懂.
计算下列各式:
1:4a(2/3)b(-1/3)÷[-2/3a(-1/3)b(-1/3)]
2:[16s(2)t(-6)/25r(4)](-3/2)
3:[-2x(1/4)y(-1/3)][3x(-1/2)y(2/3)[-4x(1/4)y(2/3)]
4:[2x(1/2)+3y(-1/4)][2x(1/2)-3y(-1/4)]
5:4x(1/4)[-3x(1/4)y(-1/3)]÷[-6x(-1/2)y(-2/3)]