\(\left(20.2^4+12.2^4-48.2^2\right):8^2=\left(20.2^4+12.2^4-12.2^2.2^2\right):8\)

\(=\left(20.2^4+12.2^4-12.2^4\right):2^6=2^4.\left(20+12-12\right):2^6\)

\(=2^4.20:2^6=2^4.2^2.5:2^6=2^6.5:2^6=5\)

bằng 5 nha

bằng 5 đúng hông

\(\Rightarrow\)(20.16+12x16-48.4):64=(16.(20+12)-192):64=(16.32-192):64=320:64=5

mình có cách ngắn hơn nhưng khó hiểu lắm nên tích đúng cho mình nha

(20.2⁴+12.2^4_48.2²)÷8²

=(20.16+12.16-48.4)÷64

={[16.(20+12)]-48.4}÷64

=(16.32-48.4)÷64

=(512-192)÷64=320÷64=5

(20.2⁴+12.2^4_48.2²)÷8²

= (20.16 + 12.16-48.4):8²

⁼ 156: 8²

=156:64

=2,4375

\(\left(20.2^4-12.2^3-48.2^2\right)^2:\left(-8^3\right)\)

\(=\left(20.16-12.8-48.4\right)^2:\left(-512\right)\)

\(=\left(320-96-192\right)^2:\left(-512\right)\)

\(=\left(224-192\right)^2:\left(-512\right)\)

\(=32^2:\left(-512\right)\)

\(=\left(32^2:-512\right)\)

\(=\left(1024:-512\right)\)

\(=-2\)

=-2 (âm hai)

mình nghĩ là nó đúng

k mình nha

\(\left(20.2^4+12.2^4-48.2^2\right):8^2\)

=\(\left[2^4.\left(20+12-12\right)\right]:\left(2^2.2^4\right)\)

=\(\left(2^4.12\right):\left(2^2.2^4\right)\)

=12:4=3

\(\left(20.2^4+12.2^4-48.2^4\right):8^2\)

=\(\left[2^4.\left(20+12-12\right)\right]:\left(2^2.2^4\right)\)

=\(\left(2^4.20\right):\left(2^2.2^4\right)\)

=20:4=5

cái kết quả bằng 3 là mik làm lộn nha