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koteika777
@koteika777
July 2022
1
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Решите уравнение подробно расписывая действия
5/(15-х)+20/(10+х)=2
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miron2077
Verified answer
исходное не пишу, приведем к общему знаменателю
50+5х+300-20х=2(15-х)(10+х)
-15х+350=300-20х+30х-2х²
2х²-25х+50=0
х₁,₂=
25⁺₋√(625-400)
=
25⁺₋15
4 4
х₁=10 х₂=2,5
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Answers & Comments
Verified answer
исходное не пишу, приведем к общему знаменателю50+5х+300-20х=2(15-х)(10+х)
-15х+350=300-20х+30х-2х²
2х²-25х+50=0
х₁,₂=25⁺₋√(625-400) = 25⁺₋15
4 4
х₁=10 х₂=2,5