Toán Lớp 7: cho hỏi a^2 : a^x-2 = bao nhiêu z
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Toán Lớp 7: cho hỏi a^2 : a^x-2 = bao nhiêu z
Comments ( 2 )
$=a^{2-x+2}$
$=a^{4-x}$