log(0,5) (3x+1)=log(0,5)4 OD 3x+1>0 X>-1/3
3x+1=4
3x=3 x=1
2)log(2)8+log(x-7)²=log(2)(2x-1)
log(2)(8*(x-7)²=log(2)(2x+1)
8*(x-7)²=2x+1
8*(x²-14x+49)-2x-1=0
8x²-112x+392-2x-1=0
8x²-114x+391=0
D=12996-12512=484
x1=(114+22)/16=8,5
x2=(114-22)/16=5,75
3)log(4) x(x-5)*(x-5)/x=log(4)1 ОДЗ х≠0 х.>5
x(x-5)*(x-5)/x=1
(x-5)(x-5)=1
x²-25=1
x²=26
x=√26 x=-√26- н е подходит
log(0,5) (3x+1)=log(0,5)4 OD 3x+1>0 X>-1/3
3x+1=4
3x=3 x=1
2)log(2)8+log(x-7)²=log(2)(2x-1)
log(2)(8*(x-7)²=log(2)(2x+1)
8*(x-7)²=2x+1
8*(x²-14x+49)-2x-1=0
8x²-112x+392-2x-1=0
8x²-114x+391=0
D=12996-12512=484
x1=(114+22)/16=8,5
x2=(114-22)/16=5,75
3)log(4) x(x-5)*(x-5)/x=log(4)1 ОДЗ х≠0 х.>5
x(x-5)*(x-5)/x=1
(x-5)(x-5)=1
x²-25=1
x²=26
x=√26 x=-√26- н е подходит