tim a biết
A=(9999999...99-9999999...99).(111111111111000000000999999999999.1111000000010923422399999.9999999888777)
9999999+9999999999999999999
1111111 + 9999999 = ???????
0*999*9899*9999999
9+99+999+9999+99999+999999+9999999+99999999=?
1234556+111111=
67890000+55555=
9999999+22222=
ai tick mk mk tick lại
\(x^2+y^2=64\)
Biểu diễn X theo Y
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