Question

vă rog repede am nevoie de răspuns ​

Answer 1

Răspuns:

b.5^20×5-5^21

5^20×5^1=5^21

5^21-5^21=0

c.6^40:6^38

6^2=36

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

Answer 2

Răspuns:

b)

5²⁰×5-5²¹=5²¹-5²¹=0

c)

6⁴⁰:6³⁸=6⁴⁰-³⁸=6²=36

d)

(7⁸)⁷:7⁵⁴=7⁸×⁷:7⁵⁴=7⁵⁶:7⁵⁴=7⁵⁶-⁵⁴=7²=49

Sper ca te-am ajutat!