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joker095
@joker095
July 2022
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Разложите на множители х^2+6х-7
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НастяАширова
У меня получилось х1=1; х2= - 7.
16 votes
Thanks 13
leshahach
D=36+42=78 интересно как ты решила?
leshahach
ой я не втупил
margoegorova1
х^2+6х-7=0
Д=6²-4×1×(-7)=36+28=64
Х=-6+8÷2=2÷2=1
Х=--6-8÷2=-7
х^2+6х-7=(х-1)(х+7)
10 votes
Thanks 15
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Answers & Comments
Д=6²-4×1×(-7)=36+28=64
Х=-6+8÷2=2÷2=1
Х=--6-8÷2=-7
х^2+6х-7=(х-1)(х+7)