Question

Ex 1, 2, 3 pag 82 testul 7 cu rezolvari complete

Answer 1

Răspuns:

Explicație pas cu pas:

1. a) 1 + 0 + 1 + 10 + 49 = 61

b) 7^21 - 7^21 = 0

c) 2^46 : 2^43 = 2^3 = 8

d) 7^56 : 7^54 = 7^2 = 49

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2.

7^30 : 7^30 + 7^1 + 7^1 *[2401 : 343 + 49 : (343 - 336)] =

1 + 7 + 7*(7 + 49:7) = 1 + 7 + 7*(7 + 7) = 1 + 7 + 7*14 = 1 + 7 + 98 = 106

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3.

4^15 = (2^2)^15 = (2^15)^2 = patrat perfect