a) (2¹7+17).(9¹5-3¹5).(2ª-4²) b) (82017-82015): (82104.8) c) (1³ + 2³ +3¹ +4³).(1³ +2³ +3³ + 4³).(3³ 81³) d) (28+8³): (25.2³)

`a ) (2^17 + 17^2) . (9^15 - 3^15) .(2^4 - 4^2)`

`= (2^17 + 17^2) . (9^15 - 3^15) . (16 - 16)`

`= (2^17 + 17^2) . (9^15 - 3^15) . 0`

`= 0`

`b ) (8^2017 - 8^2015) : (8^2014 . 8)`

`= (8^2017 - 8^2015) : 8^2015`

`= 8^2017 : 8^2015 - 8^2015 : 8^2015`

`= 8^2 - 1`

`= 64 - 1`

`= 63`

`c ) (1^3 + 2^3 +3^4 + 4^5) . (1^3 + 2^3 + 3^3 + 4^3). (3^8 - 81^2)`

`= (1^3 + 2^3 +3^4 + 4^5) . (1^3 + 2^3 + 3^3 + 4^3). (6561 - 6561)`

`= (1^3 + 2^3 +3^4 + 4^5) . (1^3 + 2^3 + 3^3 + 4^3).0`

`= 0`

`d ) (2^8 + 8^3) : (2^5 . 2^3)`

`= (2^8 + 2^9 ) : 2^8`

`= 2^8 : 2^8 + 2^9 : 2^8`

`= 1 +2`

`= 3`

`#dtkc`