Question

8. Calculati a) (5 ^ 0 + 5 ^ 1 + 5 ^ 2 + 5 ^ 3) / (2 ^ 2) c) (2 ^ 0 + 2 ^ 1 + 2 ^ 2 + 2 ^ 3 + 3 ^ 2) / (2 ^ 2) 6) (7 ^ 0 + 7 ^ 1 + 7 ^ 2 - 3 ^ 2) / (2 ^ 4) d) (3 ^ 0 + 3 ^ 1 + 3 ^ 2 + 3 ^ 3 - 2 ^ 3) / (2 ^ 3)​

Answer 1

Explicație pas cu pas:

a) (5 ^ 0 + 5 ^ 1 + 5 ^ 2 + 5 ^ 3) / (2 ^ 2)

= (1+5+25+125)/4 =156/4

=39

c) (2 ^ 0 + 2 ^ 1 + 2 ^ 2 + 2 ^ 3 + 3 ^ 2) / (2 ^ 2) =(1+2+4+8+9)/4

=24/4

=6

6) (7 ^ 0 + 7 ^ 1 + 7 ^ 2 - 3 ^ 2) / (2 ^ 4)

=(1+7+49-9)/16

=48/16

=3

d) (3 ^ 0 + 3 ^ 1 + 3 ^ 2 + 3 ^ 3 - 2 ^ 3) / (2 ^ 3)

=(1+3+9+27-8)/8

=32/8

=4