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larisayakovleva
@larisayakovleva
July 2022
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СРОЧНО!!! Помогите решить номер 3 и 5
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pomoshnik09
( √х+6)²=х² х+6=х² х²-х-6=0 D=1-4*1*-6=25
x1=1+5/2=3 x2=(1-5)/2=-2
-2 посторонний корень ответ3
5) 2х²-3х+6=0 х1*х2=6/2=3, х1+х2=3/2
х1 и х2- корни уравнения
х1²х2+х1*х2²= х1*х2(х1+х2)=3*(3/2)=9/2=4,5
ответ 4,5
1 votes
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helen127
Ововолцтцнцдутпугвлтуиуоа,прости)
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Answers & Comments
x1=1+5/2=3 x2=(1-5)/2=-2
-2 посторонний корень ответ3
5) 2х²-3х+6=0 х1*х2=6/2=3, х1+х2=3/2
х1 и х2- корни уравнения
х1²х2+х1*х2²= х1*х2(х1+х2)=3*(3/2)=9/2=4,5
ответ 4,5