Question

Thực hiện phép tính: (3^5.3^7) :3^10+5.2^4-7^3:7

Answer 1

Ta có:(3^5.3^7):3^10+5.2^4-7^3:7

= 3^12:3^10+5.16-7^2

= 3^2+80-49

= 9+80-49

= 89-49

=40

Answer 2

\(\left(3^5.3^7\right):3^{10}+5.2^4-7^3:7\)

\(=3^{12}:3^{10}+5.2^4-7^3:7\)

\(=3^2+5.2^4-7^3:7\)

\(=3^2+80-7^2\)

\(=89-49\)

\(=40\)