Question

Tính

a) -84 : 4 + 3 mũ 9 : 3 mũ 7 + 5 mũ 0

b) 295 - ( 31 - 2 mũ 5. 5) mũ 2

 

Answer 1

a)-84:4+3^9:3^7+5^0

=-21+(3^9:3^7)+1

=-21+3^2+1

=-21+9+1

=-12+1

=-11

b)295-(31-2^5.5)^2

=295-(31-32.5)^2

=295-(-129)^2

=295+129^2

=295-16641

=-16346

tick cho mk nha bạn

 

 

Answer 2

a) -84 : 4 + 3^ 9 : 3 ^ 7 + 5 ^0

=-84:4+3^2+1

=-84:4+9+1

=-21+9+1

=-12+1

=-11

b) 295 - ( 31 - 2^ 5. 5) ^2

= 295 - ( 31 -32. 5)^2

= 295 - (-129)^2

=295-16641

=-16346

 

 

Answer 3

a)- 11

b) - 16346