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Roxanica12
a fost răspuns

[(-7)^2 . (-1-6)^4 . (-5-2)^3]^5 : (-7)^43

Răspuns :

[(-7)^2 · (-1-6)^4 · (-5-2)^3]^5 : (-7)^43=
[(-7)^2·(-7)^4·(-7)^3]^5:(-7)^43= [(-7)^(2+4+3)]^5:(-7)^43=
[(-7)^9]^5:(-7)^43=
(-7)^(9·5):(-7)^43=
(-7)^45:(-7)^43=
(-7)^(45-43)=
(-7)^2=49

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