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nadiamaxim200
@nadiamaxim200
July 2022
2
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Помогите!Пожалуйста!
(x-7)*(9x+16)=0
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LukinaN70
Х-7=0:(9х+16)
х-7=0
х=0+7
х=7
1 votes
Thanks 1
angelina8508
(х-7)*(9х+16)=0
9х²+16х-63х+112=0
9х²-47х+112=0
а=9;b=-47;c=112
D=b²-4ac
D=(-47)²-4*9*112
D=2209-4032
D=-1823
D<0 (нет корней)
2 votes
Thanks 1
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Answers & Comments
х-7=0
х=0+7
х=7
9х²+16х-63х+112=0
9х²-47х+112=0
а=9;b=-47;c=112
D=b²-4ac
D=(-47)²-4*9*112
D=2209-4032
D=-1823
D<0 (нет корней)