Question

ajutor plz repedeewwwe c ​

Answer 1

Răspuns:

a) 2^(x+5)=2^13

x+5=13

x=13-5=8

b) 3^x×3^4=3^15

3^(x+4)=3^15

x+4=15

x=15-4=11

c) 5^x×5^6÷5^3=5^4

5(x+6-3)=5^4

x+3=4

x=4-3=1

Answer 2

Răspuns:

Buna

62 Determinati numarul natural x care verifica egalitățile:

c)

${5}^{x} \times {25}^{3} + 128 = 625$

${5}^{ x} \times {5}^{6} \div {5}^{3} = {5}^{8}$

${5}^{x + 3} = {5}^{8}$

$x + 3 = 8$

$x = 8 - 3$

$x = 5$