dấu này ^ là dấu gì vậy bn
mk chưa nhìn thấy bao giờ
(20 . 2^4 - 12 . 2^4 - 48 . 2^4 ) : 8^2
=(20.16-12.16-48.16):64
=16.(20-12-48):64
=16.(-40):64
=-640:64
=-10
\(\left(20.2^4-12.2^4-48.2^4\right):8^2\)
\(=\left[2^4.\left(20-12-48\right)\right]:8^2\)
\(=\left[2^4.\left(-40\right)\right]:8^2\)
\(=16.\left(-40\right):64\)
\(=-640:64\)
\(-10\)
(20 . 2^4 -12 . 2^4- 48.2^4) :8^2
=(20 .16 -12 .2^4 -48 . 2^4) : 64
= [16. (20 -12- 48) ] :64
= (16 . - 40 ) :64
=- 640 :64
=-10
