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votindanil
@votindanil
August 2022
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Sollo17
(x-3)/x-(x+5)/(x-3)=3/1|*x(x-3)
ОДЗ:
x≠0
x≠3
(x-3)²-x(x+5)=3x(x-3)
x²-6x+9-x²-5x=3x²-9x
-6x+9-5x-3x²+9x=0
-3x²-2x+9=0|:(-1)
3x²+2x-9=0
D1=k²-ac=1+27=28>0
ОТВЕТ НА ФОТКЕ
(5x-1)²+(12x+1)²=(13x-1)²
25x²-10x+1+144x²+24x+1=169x²-26x+1
25x²-10x+1+144x²+24x+1-169x²+26x-1=0
40x+1=0
40x=-1|:40
x=-0,025
Ответ:-0,025
(x-1)(2/1+1/x-1/(x+2))=0
(x-1)(2x(x+2)/x(x+2)+(x+2)/x(x+2)-x/x(x+2))=0
(x-1)(2x²+4x+2)/x(x+2)=0
ОДЗ:
x≠0
x≠-2
(x-1)(2x²+4x+2)=0
2(x-1)(x²+2x+1)=0
x-1=0
x=1
Или
x²+2x+1=0
D1=k²-ac=1-1=0
x1=x2=-1
Ответ:1;-1
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Answers & Comments
ОДЗ:
x≠0
x≠3
(x-3)²-x(x+5)=3x(x-3)
x²-6x+9-x²-5x=3x²-9x
-6x+9-5x-3x²+9x=0
-3x²-2x+9=0|:(-1)
3x²+2x-9=0
D1=k²-ac=1+27=28>0
ОТВЕТ НА ФОТКЕ
(5x-1)²+(12x+1)²=(13x-1)²
25x²-10x+1+144x²+24x+1=169x²-26x+1
25x²-10x+1+144x²+24x+1-169x²+26x-1=0
40x+1=0
40x=-1|:40
x=-0,025
Ответ:-0,025
(x-1)(2/1+1/x-1/(x+2))=0
(x-1)(2x(x+2)/x(x+2)+(x+2)/x(x+2)-x/x(x+2))=0
(x-1)(2x²+4x+2)/x(x+2)=0
ОДЗ:
x≠0
x≠-2
(x-1)(2x²+4x+2)=0
2(x-1)(x²+2x+1)=0
x-1=0
x=1
Или
x²+2x+1=0
D1=k²-ac=1-1=0
x1=x2=-1
Ответ:1;-1