p là số nguyên tố
nếu k khác 1 thì A chia hết chok
nếu k=1
p.k=1p=p
=>k=1
k to nhe
May bn ghi giai h co ly gium minh voi chu minh cung bt p bang 1
Cho biểu thuc A=p×k voi p cho truoc la so nguyen to. Tim k thuoc N* de tich A la so nguyen to
Trinh bay han ra co ly mink cho 3 tick
Cho bieu thuc A=p×k voi p la số nguyên tố cho trước. Tim k thuộc N* de tích A la so nguyen to
Giai thich co ly ,ro rang va dung minh cho 6 tick
a) Tim so nguyen n de bieu thuc de n-1 la uoc cua 5
b) Tim so nguyen m de bieu thuc : A = -5/m-1 co gia tri nguyen voi n khong =1
Chu y :may ban lam 2 cau ruj minh tick cho ha
Cho bieu thuc A = 3/n-2
a) Tim cac so nguyen n de bieu thuc A la phan so
b) Tim cac so nguyen n de A la mot so nguyen
Cac giup minh nhe minh dang can gap.
Cho bieu thuc B= 7/ n -7
a) So nguyen n phai co dieu kien gi de B la phan so.
b) Tim phan so B biet n = -7
c) Tim cac so nguyen n de B la so nguyen.
bn nao co loi giai chi tiet bai nay mk se tick,vi mk dung dien thoai ko viet dau dc nen cac ban thong cam nha.
Cho bieu thuc A=6/n+2(n€Z)
a)Tim n de A la phan so
b)Tim n de A la so nguyen
bai 1:tim so nguyen x sao cho gia cua cac phan so la so nguyen
a)x+3/x-2
b)x2+3x-2/x+2
chu y:dau / la dau chia trong phan so
bai 2:cho A=2n+1/n-2 voi n la so nguyen
a)tim n de a la phan so
b)tim n de A nguyen
c)tinh gia tri cua A biet:n=2;1;-2;-1
giup minh voi minh dang can.Ai dung minh tick cho
cho bieu thuc B=4/n-3 voi n la so nguyen
a, so nguyen n phai co dieu kien gi de B la phan so
b, Tim so B biet n=0;n=10;n=-2
THANKS NHIU
cho bieu thuc a=2/n-1 tim tat ca cac so ngyen cua n de a la so nguyen
