Both you and I are good at English.
A. Neither you nor I am good at English.
B. Neither you nor I am bad at English.
C. Either you or I am good at English
D. Not only you but also I am bad at English.
(x - 1) . (y - 2) = 3
=> (x - 1) . (y - 2) = 3 = (-1) . (-3)
= (-3) . (-1) = 1 . 3
=3 . 1
Ta có bảng sau:
x - 1 | -1 | -3 | 1 | 3 |
y - 2 | -3 | -1 | 3 | 1 |
x | 0 | -2 | 2 | 4 |
y | -1 | 1 | 5 | 3 |