Tim n thuoc N biet so n co 30 uoc va khi phan tich thanh thua so nguyen to thi co dang n = 2^x × 3^y biet x+y =8
Tim n thuoc N , biet so n co 30 uoc va khi phan tich thanh thua so nguyen to thi co dang n = 2^x × 3^y biet x + y = 8
tim 2 so tu nhien x, y biet y/8 - x/8 = 1/8 va x<y
tim x,y biet 15^x+8=y^2
tim x,y thuoc N,biet x<y:1/x+1/y=1/8
giup minh voi!
tim x,y thuoc N biet (x-6).(2y+3)=8
Tim x,y biet UCLN(x,y)=8 , x+y=32
Tim x,y biet :(x+2).(y-1)=4
x,y thuộc N
tim x, y thuoc Z biet 3/x/ phan 2 +5/y/ phan 3=8