2)2^(x²-6x-2,5)=16√2
2^(x²-6x-2,5)=2^4,5
x²-6x-2,5=4,5
x²-6x-7=0
x1=7,
x2=-1
3)25^x=625
25^x=25^2
x=2
4) (3/5)^2(x+0,5)=(5/3)³
(3/5)^2(x+0,5)=(3/5)^(-3)
2(x+0,5)=-3
2х+1=-3
2х=-4
х=-2
7)(5/6)^(1-2x)=(6/5)^(2+x)
(5/6)^(1-2x)=(5/6)^(-2-x)
1-2x=-2-x
-2x+x=-2-1
-x=-3
x=3
8)(3/7)^(3x-7)=(3/7)^(3-7x)
3x-7=3-7x
10x=10
x=1