1). (x-2)^2-9=0
(x-2)^2-3^2=0
(x-2-3)(x-2+3)=0
(x-5)(x+1)=0
x-5=0 x+1=0
x=5 x=-1
2).(2x+1)^2-(x-1)^2=0
(2x+1-x+1)(2x+1+x-1)=0
(x+2) *3x=0
x+2=0 3x=0
x=-2 x=0
1) log(3) 27 - log(√3) 27 - log(1/3) 27 -log(√3/2) 64/27=
=log(3) 3^3 - log(√3) (√3)^6 -log(1/3) (1/3)^(-3) - log(√3/2) (√3/2)^(-6)=
=3-6-(-3)-(-6)=3-6+3+6=6
решим первое уравнение -х=4-2у
5,687 * 10^7 = 56,87 * 10^6
56,78 < 56,87
( 56,78 * 10^6 ) < ( 5,687 * 10^7 )