Question

(3^{5 .} 3^{7 ) :}  3 ¹⁰ +  5 . 2⁴ - 7³ : 7 

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Answer 1

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

\(=3^{5+7}:3^{10}+5.16-7^{3-1}\)

\(=3^{12}:3^{10}+80-7^2\)

\(=3^2+80-49\)

\(=9+80-49\)

\(=40\)

Answer 2

( 3^5 . 3^7 ) : 3^10 + 5 . 2^4 - 7^3 : 7

= 3^12 : 3^10 + 5 . 16 - 7^2

= 3^2 + 80 - 14

= 9 + 80 - 14

= 75

Answer 3

=3^12 :3^10+5+16-7^3:7

=3^2 +21 +7^2

=9+21+49

=79

Answer 4

(3⁵ . 3⁷  ) : 3¹⁰ + 5 . 2⁴ - 7³ : 7

= 9 + 31

= 40 

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