Because x,y are natural arabic numbers, so
Y = 1
X = 3
Because x,y are arabic numbers, so:
X = 3
Ý = 1
y(x + 2) + x = 8
=> y(x + 2) + (x + 2) - 2 = 8
=> (y + 1)(x + 2) = 8 + 2
=> (y + 1)(x + 2) = 10 = 2.5 = 5.2 = 1.10 = 10 . 1
Lập bảng :
y + 1 | 2 | 5 | 1 | 10 |
x + 2 | 5 | 2 | 10 | 1 |
y | 1 | 4 | 0 | 9 |
x | 3 | 0 | 8 | -1 |
Vì x,y \(\in\)N nên ......