Bài 5 .2 ạ !!!!!!!! Nhanh ạ !!! Question Bài 5 .2 ạ !!!!!!!! Nhanh ạ !!! in progress 0 Môn Toán Hải Đăng 3 years 2021-05-17T05:47:47+00:00 2021-05-17T05:47:47+00:00 1 Answers 14 views 0
Answers ( )
xy+2x-5y=15
x(y+2)-5y=15
x(y+2)-5y-10=5
x(y+2)-5(y+2)=5
(x-5)(y+2)=5
nên x-5;y+2 ∈ Ư(5)
⇒ x-5 1 5 -1 -5
y+2 5 1 -5 -1
x 6 10 4 0
y 3 -1 -7 -3