1. tim cac cap so nguyen duong (x, y) sao cho:
2 x3 + xy = 11
2. tim cac cap so nguyen duong (x, y, z)sao cho:
x + y + z = x*y*z
3. tim x thuoc z, biet;
|x| = -2003
|x| = |-2003|
minh dang can gap lam. chieu mai phai nop rui
Những câu hỏi liên quan
tim cac cap so nguyen duong nguyen to cung nhau sao cho: (x+y)/(x^2+y^2)=7/25
tim cac cap so nguyen duong nguyen to cung nhau sao cho: (x+y)/(x^2+y^2)=7/25
mk can gap lam
tim cac so nguyen nuyen duong x,y,z biet rang :
x^3-y^3 -z^3 =3xyz va x^2 =2(y+z)
cho x,y,z la cac so huu ti duong thoa man x+1/yz y +1/xz z+1/xy la cac so nguyen tim gia tri lon nhat cua bieu thuc A=x+y^2+z^3
Tim tat ca cac cap so nguyen x,y sao cho xy-2x+y+1=0
xy-2x+y+1=0
x(y-2)+y+1=0
x(y-2)+y=-1
x(y-2)+(y-2)=-1-2
x(y-2)+(y-2).1=-3
(y-2).(x+1)=-3
y-2 E Ư(-3)
y-2 E(1;-1;3;-3)
ta có bảng
y-2 1|-1|3|-3|
x+1 -3|3|-1|1|
y 3|1|5|-1|
x -4|2|-2|0|
vậy các cặp(x;y) là(3;-4);(1;2);(5;-2);(-1;0)
mình làm sai thì thôi bạn nhé=)
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Tim cac so nguyen duong x;y;z thoa man x!+y!=10.z+9
tim tat ca cac cap so x;y sao cho x^2-2/xy+2 co gia tri nguyen
tim cac cap so nguyen (x,y)biet:
xy+3y+x=2
xy+3y+x=2
(3+x)y+x=2
(3+x)y+(x+3)=5
(3+x)(y+1)=5
...............tự giải tiếp
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tim cac so nguyen duong x,y,z thoa man x^2+y^3+z^4