Question

СРОЧНО!
помогите плиз (Д/з)

Answer 1

1-й номер
2^x - 2^x-4 = 15
2^x*(1-2^-4) = 15
2^x *(1-12^4) = 15
2^x*(1-116) = 15
2^x*1516 = 15
2^x = 15:1516
2^x = 15*1615
2^x = 16
x = 4