Này anh làm rồi mà nhỉ?
\(a,2^4.2^5=2^{4+5}=2^9\\ b,5^{12}:5^6=5^{12-6}=5^6\\ c,7^5:\left(7.7^2\right)=7^5:\left(7^{1+2}\right)=7^5:7^3=7^{5-3}=7^2\\ d,9.3^7:3^0=3^2.3^7:3^0=3^{2+7-0}=3^9\)
a) 24. 25 = 29
b) 512: 56 =56
c) 75 : ( 7. 72 )
= 75 : 73
= 72
= 9.37 : 30
= 9.37 : 1
= ( 9 : 1 ) . 37
= 9 . 37
= 32. 37
= 39