有道奥数题想请教大家：A乘以B等于72，B除以A等于8，求A.B

Question

如题所述

Answer 1

AB=72，B÷A=8，那么BB=72×8得B=±24,A=±3,两者同号。同为正或者同为负

Answer 2

72÷8=9
9=3×3
所以A=3
B=3×8=24

Answer 3

A等于正负3，B等于正负24

Answer 4

AB = 72 (1)
B/A = 8 (2)

(1) x (2)
AB x (B/A) = 72 x 8
B x B = 72 x 8
B = 24 (-24)

A = 3 (-3)本回答被网友采纳