Question

(8) Calculaţi: a) (5⁰+5¹ +5² +5³): 2²; c) (20+2¹+2²+2³+3²): 2²; b) (7⁰+7¹+7²-3²): 2; d) (30+3¹ +3² +3³-2³):2³.

va rog repede dau coroana ​

Answer 1

Răspuns:

a) (1+5+25+155):4=186:4=46 rest 2 sau 45,5

b) (1+7+49-9):2=48:2=24

c) (20+2+4+8+9):4=43:4=10 rest 3 sau 10,75

d) (30+3+9+27-8):8=61:8=7 rest 5 sau 7,625