Question

Thực hiện phép tính

a, 2.6².3.6⁴÷6⁵     b, 8.2⁵.16÷2¹¹     c, ( 4⁴.16)÷(4³.4)        D, 5.125.25÷5⁶

Answer 1

a)

\(2.6^2.3.6^4\text{:}6^5\)

\(=6.6^6.6^5\)

\(=6^7:6^5\)

\(=6^2=36\)

b) \(8.2^5.16:2^{11}\)

\(=2^3.2^5.2^4:2^{11}\)

\(=2^8.2^5:2^{11}\)

\(=2^{12}:2^{11}\)

\(=2\)

c) \(\left(4^4.16\right):\left(4^3.4\right)\)

\(=\left(4^4.4^2\right):4^4\)

\(=4^6:4^4\)

\(=4^2=16\)

Answer 2

a) \(...=2.2^2.3^2.3.2^4.3^4:\left(2^5.3^5\right)=2^7.3^7:2^5.3^5=2^2.3^2=4.9=36\)

b) \(...=2^3.2^5.2^4:2^{11}=2^{12}:2^{11}=2\)

c) \(...=2^8.2^4:\left(2^6.2^2\right)=2^{12}:2^8=2^4=16\)

d) \(...=5.5^3.5^2:5^6=5^6:5^6=1\)

Answer 3

d) \(5.125.25:5^6\)

\(=5.5^3.5^2:5^6\)

\(=5^4.5^2:5^6\)

\(=5^6:5^6=1\)

Answer 4

a) 36

b) 2

c) 16

d) 1