Question

Ofer coroana!! Urgent​

Answer 1

Răspuns:

Explicație pas cu pas:

1

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

2

(5^10:5^7-1-25):11+1=(5³-26):11+1=99:11+1=9+1=10

3

(81-80)^2019-(64-8×8)^2020+2-1=1^2019+0+2-1=2