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sneg346
@sneg346
July 2022
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18/x+10=x+10/18.запишите меньший из корней
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gorshckowashur1
Ответ:
18/x+10=x+10/18 |*18x
18*18+10*18x=x(x+10)
324+180x=x^2+10x
-x^2+324+180x-10x=0
-x^2+324+170x=0 |*(-1)
x^2-170x-324=0
D=(-170)^2+324*4=28900+1296=30196
x1=(170+174)/2=172
x2=(170-174)/2=-2
18
*
18
--------
144
+
18
---------
324
170
*
170
--------
11900
+
17
----------
28900
Ответ:-2
2 votes
Thanks 1
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Answers & Comments
18/x+10=x+10/18 |*18x
18*18+10*18x=x(x+10)
324+180x=x^2+10x
-x^2+324+180x-10x=0
-x^2+324+170x=0 |*(-1)
x^2-170x-324=0
D=(-170)^2+324*4=28900+1296=30196
x1=(170+174)/2=172
x2=(170-174)/2=-2
18
*
18
--------
144
+
18
---------
324
170
*
170
--------
11900
+
17
----------
28900
Ответ:-2