解有理数算式:-32×(-1/2)的三次方+(-1/27)×(-3)的2次方

问题描述:

解有理数算式:-32×(-1/2)的三次方+(-1/27)×(-3)的2次方

-32 ×(-1/2)^3 + ( - 1/27) × (-3)^2
= - 32 × (-1/8) + (-1/27) × 9
= 4 - 1/3
= 11/4还有一题-5÷(-5/4)的2次方×(3/2)的3次方-5 ÷(-5/4)的2次方×(3/2)的3次方

-5÷ (25/16) × (27/8)
= - 5 × 16/25 × 27/8
= - (5 × 16 × 27)/(25 × 8)
= - 54/5