`(9/14 ) ². (-7/3) ³` Question `(9/14 ) ². (-7/3) ³` in progress 0 Môn Toán Orla Orla 4 years 2020-10-30T19:02:34+00:00 2020-10-30T19:02:34+00:00 2 Answers 58 views 0
Answers ( )
Đáp án:
` (9/14)^2 . ( -7/3) ^3 `
` = 81/196 . (- 343/27) `
` = – 21/4 `
Giải thích các bước giải:
`(9/14 ) ². (-7/3) ³`
`= [9²]/[14²] . [-7³]/[3³]`
`= 81/196 . [-343]/27`
`= [-21]/4`
Xin hay nhất !