Question

Rút gọn biểu thức: 340:{2[5.(-12)-(13-9)²]}

Answer 1

340 : {2.[5.(-12) - (13 - 9)²]}

= 340 : [2.(-60 - 4²)]

= 340 : [2.(-60 - 16)]

= 340 : [2.(-76)]

= 340 : (-152)

= -85/38

Answer 2

trình bày:

=340:{2[-60-9-16]}

=340:{2.(-85)}=340:(-170)=340/-170=-2

Answer 3

=340:{2.(-76)}=340:(-152)=-85/38

Answer 4

`340:{2[5.(-12)-(13-9)^2]}`

`=340:{2[-60-4^2]}`

`=340:{2[-60-36]}`

`=340:{2.(-96)}`

`=340:(-192)`

`~~1`