1.已知a^3=-125,b^3=-1/216,a^3=0.064,求a,b,c的值.2.求值:①0.4的立方根,②3的立方根的三次方,③8^2的立方根是

问题描述:

1.已知a^3=-125,b^3=-1/216,a^3=0.064,求a,b,c的值.2.求值:①0.4的立方根,②3的立方根的三次方,
③8^2的立方根是

1,a=-5,b=-1/6,c=0.4
2,(1)5分之三次根号50,(2)3,(3)2根号2