1. 5^(x+3) = 5 ^ (8-2x)
x+3 = 8 -2x
3x = 5
x = 5/3
2. 3^(x-2) = 3^(-x-1)
x-2+x=-1; 2x = 1; x= 0.5
3. 2^(-4x) = 2^(5x-10)
-4x=5x-10; 9x=10; x= 10/9
4. 2^x • (10-8) = 32
2^x = 16; x =4
5. 3^x • ( 1 + 4/9) = 39
3^x = 27; x = 3
6. 2^(2x) - 4×2^(x) + 4 = 0
Пусть 2^(x) = t
t^2 - 4t + 4 = 0
t=2
Значит 2^(x) = 2
x=1