а)2^(-4)+1-4^(-1)=(1/2^4)+1-(1/4)=1/16+1-1/4=1/16+16/16-4/16=13/16
б)1/(-1)^20-1/(-1)^31-1/2,25=1+1-1/2,25=2-1/2,25=(4,5-1)/2,25=3,5/2,25=0,7/0,45
в) 12705
г) 3^(-4)-3^(-3)+3^(-2)-3^(-1)=1/81-1/27+1/9-1/3=1/81-3/81+9/81-27/81=10/81-30/81=-20/81
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
а)2^(-4)+1-4^(-1)=(1/2^4)+1-(1/4)=1/16+1-1/4=1/16+16/16-4/16=13/16
б)1/(-1)^20-1/(-1)^31-1/2,25=1+1-1/2,25=2-1/2,25=(4,5-1)/2,25=3,5/2,25=0,7/0,45
в) 12705
г) 3^(-4)-3^(-3)+3^(-2)-3^(-1)=1/81-1/27+1/9-1/3=1/81-3/81+9/81-27/81=10/81-30/81=-20/81