Question

[-3×(-2/3)的2次方-1/2÷(-3/4)]÷|(-1.25)的2次方-1又5/8|

今晚解出谢谢。需过程

Answer 1

[-3×(4/9)-1/2x(-4/3)]÷|{-[1+（1/4）]}的2次方-13/8|
=[(-4/3)+(2/3)]÷|(5/4)^2 -13/8|
=-(2/3)÷|(25/16)-26/16|
=-(2/3)÷1
=-(2/3)

追问

你们到底哪个是对的= =

追答

相信我，我是对的，绝对，你可以按计算器验证

Answer 2

[-3×(-2/3)的2次方-1/2÷(-3/4)]÷|(-1.25)的2次方-1又5/8|
=[ -3×（4/9) + (1/2) × (4/3) ] ÷ | (5/4)的2次方 - 13/8|
= [ - 4/3 + 2/3 ] ÷ | 25/16 - 13/8|
= ( - 2/3 ) ÷ | -1/16|
= ( - 2/3) ÷ ( 1/16 )
= ( - 2/3) × 16
= - 32/3

追问

你们到底哪个是对的= =

追答

相信计算器

Answer 3

(-2/3)²=4/9
-3×(-2/3)²=- 4/3

1/2÷(-3/4)=-3/2
(-1.25)²=25/16
[-3×(-2/3)的2次方-1/2÷(-3/4)]÷(-1.25)的2次方-1又5/8]=（-4/3+2/3）÷| 25/16 - 13/8|
=( - 2/3) ÷ ( 1/16 )=- 32/3

追问

你们到底哪个是对的= =

追答

就是这个了，不会错的。