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dok56474747
@dok56474747
July 2022
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РЕШИТЕ СРОЧНА,30 баллов
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marina2971
3-2 дробь 1 7 +18 равно 5 8
1 votes
Thanks 0
yulialegoss
1)x^2+9x+8=0
Д=в^2-4ac=9^2-4*1*8=81-32=49
д>0; два корня
x1=-9+№49/2*1=-9+7/2=-2/2=-2
x2=-9-№49/2*1=-9-7/2=-15/2=-7 1/2
ответ:-7 1/2;-2
1 votes
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Answers & Comments
1)x^2+9x+8=0
Д=в^2-4ac=9^2-4*1*8=81-32=49
д>0; два корня
x1=-9+№49/2*1=-9+7/2=-2/2=-2
x2=-9-№49/2*1=-9-7/2=-15/2=-7 1/2
ответ:-7 1/2;-2