a) \(\left(3^{35}+3^{34}-3^{33}\right):3^{32}\)
\(=\frac{3^{35}}{3^{32}}+\frac{3^{34}}{3^{32}}-\frac{3^{33}}{3^{32}}\)
\(=3^3+3^2-3\)
\(=27+9-3\)
\(=33\)
b) \(5^3.37+5^3.64-5^7:5^4\)
\(=5^3.37+5^3.64-5^3\)
\(=5^3\left(37+64-1\right)\)
\(=5^3.100\)
\(=125.100\)
\(=12500\)
\(\left(3^{35}+3^{34}-3^{33}\right)\div3^{32}=3^{33}\left(3^2+3-1\right)\div3^{32}\)
\(=3^{33}.11\div3^{32}=11\left(3^{33-32}\right)=11.3=33\)
Ê Despacito, tai sao ở chỗ:
= 53 x 37 + 53 x 64 - 53
= 53 x ( 37 + 64 - 1)
Tại sao 53 lai = 1
Trí Phạm Hồ Hữu
\(5^3.37+5^3.64-5^3.1\)
\(=5^3.\left(37+64-1\right)\)
ta dat nhan tu chung \(5^3ra\)ngoai thi trong ngoac chi con lai 1
Nhưng nếu 53 x 1 chẳng khác gì 53 x 50 = 53 mà