\(151-2^{91}:2^{88}+1^{2.33}=151-2^{91-88}+1^{66}=151-2^3+1=151-8+1=144\)

Tên loài chim là sáo

Bỏ sắc là sao (Thường thấy trên trời)

sao

sáo

\(x\left(x-4\right)-2x+8=0\)

\(\Leftrightarrow x\left(x-4\right)-2\left(x-4\right)=0\)

\(\Leftrightarrow\left(x-4\right)\left(x-2\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}x=4\\x=2\end{matrix}\right.\)

D

D

1km = 1000m

12,44m = 12m 44cm

1298mm = 1,298m

66066m = 66,066km

81,998km = 81998m

77m = 0,77hm

5hm 63m = 56dam 3m

44,3dm = 4430mm

14m 7cm = 14,07m

3dam 58cm = 3058cm

272cm = 0,00272km

\(x\left(x-4\right)-2x+8=0\)

\(\Leftrightarrow x\left(x-4\right)-2\left(x-4\right)=0\)

\(\Leftrightarrow\left(x-4\right)\left(x-2\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}x=4\\x=2\end{matrix}\right.\)

C