Các câu hỏi tương tự
Tim x,y la so nguyen
a) 2x-3y+5= xy
b) x mu 2 +2xy+2x+4y
B2 Tim x,y la so nguyen to
x mu 2 -2y mu 2 =1
B3 Tim so tu nhienx,y
7 .(x-2004) mu 2 = 23- y mu 2
so sanh 2 mu 36 va 3 mu 27
9 mu 20 va 9999 mu 10
54 mu 4 va 21 mu 12
So sánh a/b (b lon hon 0 ) và a+n/b+n (n thuoc N*)Xac dinh so nguyen x de x mu 2 -3/x mu 2 -1 la so nguyen
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![=]]]]]]]]]]] NHien](https://hoc24.vn/images/avt/avt156801299_256by256.jpg)
So sanh
a ] 10 mu 20 va 19 mu 10
b ] [ -5 ] mu 30 va [ -3 ] mu 50
c ] 64 mu 8 va 16 mu 12
so nguyen a nho nhat thoa man 2.1/2 mu a<1/4 mu 20
chung minh 1-1/2 mu 2 -1/ 3 mu 2 - 1/ 4 mu 2 - ... - 1/2015 mu 2 > 1/2015
cac bn giup mk nka
rut gon a=4 mu 5. 9 mu 4 - 2 . 6mu 9/2 mu 10. 3 mu 8+ 6mu 8 .20
cau 1:tinh gia tri bieu thuc
3/4 +1/1/4 *2/2/3-(-1/2)^2:6/5
cho ma co 2 dau/la hon so,con 1 dau la phan so,con ^2 la mu 2
cau 2:tim x biet
( x-1)^5= -32
cho ^5 co nghia la mu 5
Tim so nguyen d uong m,n sao cho
2 mu m - 2 mu n = 256