Question

18. Rezultatul calculului: a) [(52)* : 57 – 50 – 52] : 11 + 12019 ; c) ​

Answer 1

Răspuns:

Explicație pas cu pas:

a)7[7^4-7(7³-7²)]-7^4=7(7^4-7³(7-1)]-7^4=7·7³(7-6)-7^4=

=7^4-7^4=0

b)[5^10:5^7-1-5²]:11+1=(5³-1-25);11+1=(125-25-1):11+1=99:11+1=

=9+1=10

c)(3^4-2^4·5)^2019-(4³-4³)^2020+2-1=(81-16·5)^2019-0+2-1=

=1^2019+2-1=2