Các câu hỏi tương tự
tim cac so nguyen x,y,z bt {5x-7} mu 2 cong {6 tru 5y } mu2 cong {5z } mu 2 bang 10
tim x thuoc N:
a) 2 mu x =4 nhan 128
b)2 mu x nhan 3 mu x =4 nhan 9
5 mu n nhan 5 mu n cong 1 nhan 5 mu n cong 2 be hon hoac bang 10 mu 18
tim x y thuoc z biết | x -1| + |y | = 2
( x -1) mu 2 + y mu 2 = 4
tim x y nguyen biet
x mu2 +y mu 2-z mu 2+z+1=2(x+y-xy)
tim x;y thuoc z biet y phan tru 2 bang x tru 2 nhan y phan x
2 nhan x phan 3 nhan y cong x bang1 phan y
1) Tính:
a) A = 7 mu 2 phan 2 nhan 9 cong 7 mu 2 phan 9 nhan 16 cong 7 mu 2 phan 16 nhan 23 cong van van cong 7 mu 2 phan 65 nhan 72
a mu 1 nhan a mu 2 nhan a mu 3 nhan ..... a mu 100 = a mu x
hoi x bang bao nhieu
cac ban oi giup minh voi
1.tim a,b thuoc Z,biet:a.(2b-3)=-6
2.cho x,y thuoc Z thoa man x mu 2 +y mu 2 chia het cho 3.chung to x va y chia het cho 3.