Question

ajutor la acest exercitiu de mate ​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

=2ⁿ*(2³+2²+1) :13

=2ⁿ*(8+4+1):13

=2ⁿ*13:13

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b)

=5ⁿ*(5²+5¹-1):29

=5ⁿ*(25+5-1):29

=5ⁿ*(30-1):29

=5ⁿ*29:29

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c)

=(21ⁿ⁺²-3ⁿ*7ⁿ⁺¹+63ⁿ⁺¹:3ⁿ⁺¹):455

=(21ⁿ⁺²-21ⁿ*7+21ⁿ⁺¹):455

= 21ⁿ*(21²-7+21¹):455

=21ⁿ*(441-7+21)

=21ⁿ*(434+21):455

=21ⁿ*455:455