5x + 2y - xy = 16
=> 5x + y(2 - x) = 16
=> 5x - 10 - y(x - 2) = 6
=> 5(x - 2) - y(x - 2) = 6
=> (5 - y)(x - 2) = 6
ta có bảng :
| 5-y | 1 | -1 | 2 | -2 | 3 | -3 | 6 | -6 |
| x-2 | 6 | -6 | 3 | -3 | 2 | -2 | 1 | -1 |
| y | 4 | 6 | 3 | 7 | 2 | 8 | -1 | 11 |
| x | 8 | -4 | 5 | -1 | 4 | 0 | 3 | 1 |
Các câu hỏi tương tự
tim cac cap so nguyen x,y
5x + 2y - xy = 16
Tim cac cap so nguyen x,y
a,x . ( y - 3 ) = -12
b,xy - 3x - y = 0
c,xy + 2x + 2y = -16
tim so nguyen x , y biet
5x + 2y - xy = 16
tim cac so nguyen x , y biet
e) (x - 3) (x + y)=-11
f)xy + 3x - 2y - 6 = 5
Tim tat ca cac cap so nguyen x,y sao cho
a) xy = 3
b) x(2y - 1)=8
tim cac so xy nguyen duong biet /x-2y+1/*/x+4y+3/=20
tim cac so nguyen x,y biet
xy - 3y = -19
(x - 2y)2 (y - 6)2 = 2
Tim tat ca cac cap so nguyen x,y sao cho
a) xy-2x-2y=0
b) 20x + 10y =2010
tim cac cap so x,y biet
g)3x + 4y - xy = 15
h)5x + 2y - xy = 16