Question

ПОМОГИТЕЕ ПОСЛЕДНИЕ БАЛЛЫ ОТДАЮ

Answer 1

$x = - 1$

$x = - \frac{2}{3}$

$x = 2$

$x = 3$

Answer 2

7) 8^2х+1=0,125
2^6х+3=2^-3
6х+3=-3
6х=-6
х=-1
8) 49^х+1=(1/7)^х
7^2х+2=7^-х
2х+2=-х
2х+х=-2
3х=-2
х= -2/3
9) 3^х+2-5•3^х=36
(3^2-5)3^х=36
(9-5)3^х=36
4•3^х=36
3^х=9
х=2
10) 4^х+1+4^х=320
(4+1)4^х=320
5•4^х=320
4^х=64
х=3