giúp em vs mn, em cảm ơn [3^12.2^3+3^0.(3^15:3^3)]:3^10 ^=mũ (3^2=3 mũ 2)
2 câu trả lời
$[3^{12}.2^3+3^0.(3^{15}:3^3)]:3^{10}$
$=[3^{12}.2^3+3^{12}]:3^{10}$
$=[3^{12}.(2^3+1)]:3^{10}$
$=[3^{12}.(8+1)]:3^{10}$
$=[3^{12}.9]:3^{10}$
$=3^{12}.9:3^{10}$
$=3^{2}.9$
$=9.9$
$=81$
$→ a^m-a^n=a^{m-n}$
$#thanhmaii2008$