Question

$ajutatima \: \: va \: \: rog \: \: repee \:$
Help ! Repede am nevoie până pe luni .​

Answer 1

Răspuns:

Bună, sper ca te am ajutat!!

Answer 2

Răspuns:

5^ ^ **2^ ^ *(5^ ^ 2*2^ ^ 1 + 7 )=57000a)5^ ^ x+2*2^ ^ x + 1 +7*10^ ^ x=57000 5^x+2x2^x+1+7x5^xx2^x=57000 5^ ^ **2^ ^ *(5^ ^ 2*2^ ^ 1 + 7 )=57000 5^xx2^x x57-57000 5^ ^ **2^ ^ x = 1000

10^x =103

x = 3

b)12×4^x-5x4^x=7x2¹2 12*2^ ^ 2*-5*2^ ^ 2x = 7 * 2 ^ 12 2^ ^ 2(12 - 5) = 7 * 2 ^ 1 2^ ^ 2x * 7 = 7 * 2 ^ 12 2^ ^ 2x = 2 ^ 12

x = 12

c)4^x+2+4^x+1+4^x=336 2^2x+4+2^2x+2+2^2=2^4 x 21 2^2x(2^4+2^2+2^0)=2^4 × 21 2^2x(16+4+1)=2^4 × 21 2^2x x21=2^4 × 21

2^2x=2^4 2x=4

x=2

d) 943-942-941-71x3^x 386-384-382-71x3^x 382(34-32-3°)=71x3^x 382(81-9-1)=71x3^x 382 x71=71×3^x 382=3^x x=82