Question

Ex 3 va rog dau cororana!​

Answer 1

4^x + 2^(2x+1) = 48

2^(2x) + 2^(2x) * 2 = 48

2^(2x)*[1 + 2] = 48

2^(2x) = 48:3

2^(2x) = 16

2^(2x) = 2^4

2x = 4

x = 2