Question

2^(3х+2)-2^(3х-2)=30

Answer 1

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Answer 2

$2^{3x+2}-2^{3x-2}=30$
Пусть 2^{3x}=t
4t-1/4t-30=0
16t-t=120
15t=120
t=8
Возвращаемся к замене
$2^{3x}=8 \ 2^{3x}=2^3 \ 3x=3 \ x=1$