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tim so nguyen m biet m^2+3m-13 chia het cho m+3
Tim cac so tu nhien m va n biet :
a) m + 6 = n . ( m - 1 )
b) m - 3 = n . ( m + 2 )
tim m biet 180-m=540-6.m
tim cac so nguyen m,n biet rang m/2-2/n=1/2
bai 1 tim so tu nhien co 4 chu so ab cd biet abcd+abc+ab+a=4321.tim abcd
bai 2 cho m , n la cac so tu nhien va p la so nguyen to thoa man 9/m-1=m+n/p. tinh A= p^2-n
bai 3 tim so co 3 chu so biet abc 1000/a+b+c=abc.
Tim so nguyen to x va y biet x^2-x+993*y=2006
tim m biet 180-m=540-6m
tim m biet 180 - m = 540 -6m
tim m,n thuoc Z biet
\(\frac{m}{2}-\frac{2}{n}=\frac{1}{2}\)
