(2/3)的91次方*1.5的92次方*(-1)93次方=?

问题描述:

(2/3)的91次方*1.5的92次方*(-1)93次方=?

(2/3)^91*1.5^92+(-1)^93=0.5

=(2/3)^91*(3/2)^92*(-1)
=-(2/3*3/2)^91*3/2
=-1^91*3/2
=-3/2
=-1.5

原式=(2/3)的91次方×(3/2)的92次方×(-1)
=-(2/3×3/2)的91次方×3/2
=- 3/2