co ton tai hay ko so nguyen a,b,c thoa man tat ca cac dieu kien sau abc + a = -625 , abc + b = -633 , abc + c = -597
co ton tai hai khong cac so tu nhien a,b c thoa man dong thoi cac dang thuc sau :abc + a = 999;abc+c=9
a, co bao nhieu cap so nguyen ( x,y ) thoa man x + y=1
b. co bao nhieu cap so nguyen ( x,y ) thoa man x.2 + y =1
biet (a;b) la 1 cap so nguyen thoa man (a+1).(b+2)=3khi do a.b co gia tri lon nhat
cho 3 so a,b,c la so nguyen . Trong do co 1 so nguyen am , 1 so nguyen duong va 1 so bang 0 , thoa man IaI=b^2.(b-c) . Hoi a,b,c thuoc loai so nao
Cho so nguyen a lon hon 32.hoi ton tai hay khong so tu nhien k thoa man a40<k<a41 ma k co it nhat 61 chu so 0 ở tan cung
Ton tai hay khong cac so nguyen a,b,c sao cho:
a.b.c.d+a=1999
a.b.c.d+b=999
a.b.c.d+c=99
a.b.c.d+d=9
Ton tai hay khong cac so nguyen a,b,c sao cho:
a.b.c.d+a=1999
a.b.c.d+b=999
a.b.c.d+c=99
a.b.c.d+d=9
Tim cac gia tri nguyen cua x biet
a, Y=5x+9/ x+3
b, Tim cac cap so nguyen x , y thoa mai he thuc :
(2x-1).(y+4)
