M Mai Đình Quý New member Xu 0 15/8/13 #1 cho bieu thuc ( a +2b)^2 =< ( a +2b ) + 2. tim max cua : P = 2b^3 +ba^2 +a^2 + 5ab^2 + b^2 + 5ab + a + 2b +2009
cho bieu thuc ( a +2b)^2 =< ( a +2b ) + 2. tim max cua : P = 2b^3 +ba^2 +a^2 + 5ab^2 + b^2 + 5ab + a + 2b +2009