8^2 x 5^2 = ( 8x5 ) ^2 = 40^2
Đáp án: $1600$
Giải thích các bước giải:
$C1.8^2 . 5^2$
$= (8.5)^2$
$= 40^2$
$= 1600$
$C2. 8^2 . 5^2$
$= 64 . 25$
$= 1600$.
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