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annahappy13
@annahappy13
August 2022
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помогите, дам 15 баллов!
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yucakecherri
Воттттт..................
1 votes
Thanks 2
annahappy13
спасибо:)
Яна38516
Х(х-2)=4(х+4)
х²-2х=4х+16
х²-2х-4х-16=0
х²-6х-16=0
По теореме Виета или дискриминант:
х(1,2)=6±√-6²-4*1*(-16)/2*1=
=6±√100/2=6±10/2
х(1)=6+10/2=16/2=8
х(2)=6-10/2=-4/2=-2
Ответ: х(1)=8, х(2)=-2
0 votes
Thanks 2
annahappy13
спасибо :)
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Answers & Comments
х²-2х=4х+16
х²-2х-4х-16=0
х²-6х-16=0
По теореме Виета или дискриминант:
х(1,2)=6±√-6²-4*1*(-16)/2*1=
=6±√100/2=6±10/2
х(1)=6+10/2=16/2=8
х(2)=6-10/2=-4/2=-2
Ответ: х(1)=8, х(2)=-2