N
nobilovexuka
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bài 1: 5^2x= 3^2x +2.5^x +2.3^x
bài 2: (căn bậc hai(2-căn 3))^x +(căn bậc hai(2+căn 3))^x =2^x
bài 3: 2^x=3^0,5x +1
:-\"
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bài 2: (căn bậc hai(2-căn 3))^x +(căn bậc hai(2+căn 3))^x =2^x
bài 3: 2^x=3^0,5x +1
:-\"