Răspuns :
Răspuns:
SALUT
b) 3^25 -3^22 = (3^3-1)*3^22 = (27-1)*3^22 = 26*3^22
c)3*5^19+5^20+5^21 = (3+5+5^2)*5^19 = (3+5+25)*5^19 = 33*5^19
d) 2^62+2^61-2^60 = (2^2+2-1)*2^60 =
(4+2-1)*2^60 = 5*2^60
e) 6^7+6^6-40*6^5 = (6^2+6-40)*6^5 =
(36+6-40)*7776 = 2* 7776 = 15552 = 1,5552 *10^4
f) a^n+a^n+1 = a^n(1+a) cred ca asa e...
EVERGREEN
Răspuns:
Explicație pas cu pas:
b) 3²⁵ - 3²² = 3²² x ( 3³ - 1 ) = 3²² x ( 27-1) = (3²)¹¹ x 26 = 9¹¹x26
________________________________________________
c) 3 x 5¹⁹ + 5²⁰ + 5²¹ =
= 5¹⁹ x ( 3 + 5¹ + 5²) =
= 5¹⁹ x (8+25) =
= 5¹⁹ x 33
__________________
d) 2⁶² + 2⁶¹ - 2⁶⁰ =
= 2⁶⁰ x ( 2²+2¹-1) =
= 2⁶⁰ x 5
________________
e) 6⁷ + 6⁶ - 40x6⁵ =
= 6⁵ x (6² + 6¹ - 40 ) =
= 6⁵ x (36+6-40) =
= 6⁵ x 2
_________________
f) aⁿ + aⁿ⁺¹ = aⁿ + aⁿxa¹ = aⁿ x ( 1 + a)