Các câu hỏi tương tự
cho m va n la 2 so tu nhien va p la mot so nghuyen thoa man 7/m-1=m+n/p
c/m p 2 =n+2
cau 1 ,cho m,n thuoc n va p la so nguyen to thoa man p/m-1m+n/pCMRp^2n+2cau 2,cho a,b,c thoa man a+b+c0 CMRab+bc+ca be hon hoac bang 0cau 3,bay gio la 4 gio 10 phut hoi sau it nhat bao lau thi hai kim dong ho nam doi dien nhau tren mot duong thangcau 4,so 2^100 viet trong he thap phan tao thanh 1 so hoi so do co bao nhieu chu socau 5,cho a,b,c la so do 3 canh cua mot tam giac vuong voi c la so do canh huyen CMRa^2n+b^2n be hon hoac bang c^2n (n la so tu nhien lon hon 0 )
Đọc tiếp
cau 1 ,cho m,n thuoc n va p la so nguyen to thoa man p/m-1=m+n/p
CMRp^2=n+2
cau 2,cho a,b,c thoa man a+b+c=0 CMRab+bc+ca be hon hoac bang 0
cau 3,bay gio la 4 gio 10 phut hoi sau it nhat bao lau thi hai kim dong ho nam doi dien nhau tren mot duong thang
cau 4,so 2^100 viet trong he thap phan tao thanh 1 so hoi so do co bao nhieu chu so
cau 5,cho a,b,c la so do 3 canh cua mot tam giac vuong voi c la so do canh huyen CMRa^2n+b^2n be hon hoac bang c^2n (n la so tu nhien lon hon 0 )
Tim so tu nhien n thoa man \(\frac{n+3}{n^2-9}\)la so tu nhien.
Giai cu the ra cho minh nhe!!!
cho n la so tu nhien co 2 chu so.Tim n biet n+4 va 2n deu la cac so chinh phuong
cho n la so tu nhien co 2 chu so.Tim n biet n+4 va 2n deu la so chinh phuong
thanks truoc nha
bai 1 tim cac stn x y z sao cho x+y+zxyzbai 2cmr neu m^2+mn+n^2chia het cho 9 voi m ,n la cac stn thi m,n chia het cho 3bai 3 tim stn n nho nhat de cac phan so sau toi gian7/n+9.8/n+10,...,31/n+33bai 4chung to rang phan so m^3+2m/m^4+3m^2 +1 toi gianbai 5 a,cmr khong ton tai so chinh phuong nao co dang ababb,cho 51 so nguyen duong khong vuot qua 100 cmr ton tai 2 so trong 51 so noi tren ma 1 so chia het cho so con laic,tim cac so co 3 chu so sao cho hieu cua so ay va gom 3 chu so ay viet theo th...
Đọc tiếp
bai 1 tim cac stn x y z sao cho x+y+z=xyz
bai 2cmr neu m^2+mn+n^2chia het cho 9 voi m ,n la cac stn thi m,n chia het cho 3
bai 3 tim stn n nho nhat de cac phan so sau toi gian
7/n+9.8/n+10,...,31/n+33
bai 4chung to rang phan so m^3+2m/m^4+3m^2 +1 toi gian
bai 5 a,cmr khong ton tai so chinh phuong nao co dang abab
b,cho 51 so nguyen duong khong vuot qua 100 cmr ton tai 2 so trong 51 so noi tren ma 1 so chia het cho so con lai
c,tim cac so co 3 chu so sao cho hieu cua so ay va gom 3 chu so ay viet theo thu tu nguoc lai la mot so chinh phuong
bai 6cmr A=2x(x+y-1)+y^2+1 luon nhan gia tri khong am voi moi x,y
bai 7 tim hai so nguyen duong sao cho tong ,hieu thuong (so lon chia cho so nho )cua chung cong lai duoc 38
bai 8 cho ba so a,b,c thoa man a/2009=b/2010=c/2011
tinh gia tri cua bieu thuc M=4(a-b)(b-c)-(c-a)^2
C/m nếu m2+ mn +n2 chia het cho 9 voi m n la cac so tu nhien thi m n chia het cho 3
tim phan so m\n khac 0 va so tu nhien k biet rang m/n=m+k\n.k
cho tam giac abc can tai c va goc c = 100 do bd la phan giac cua goc b tu a ke ax tao voi ab mot goc 30 do tia ax cat bd tai m cat bc tai e bk la phan giac abd bk cat ax tai n tinh acm so sanh mn va ce