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bulankina72
@bulankina72
July 2022
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Помогите, пожалуйста.
Решите уравнение:
Номер 3: 2x^2-7x+6=0
Номер 4: x^2 - x = 2x-5
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Answers & Comments
aika137
3) D=(-7)^2-4×2×6=49-48=1
x1=7+1/4=2 x2=7-1/4=3/2
4) x^2-3x+5=0
D=(-3)^2-4×1×5=9-9=0
x=-3/2
2 votes
Thanks 2
bulankina72
1/4 это одна четвертая, да?
aika137
(7-1)÷4=3/2
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Answers & Comments
x1=7+1/4=2 x2=7-1/4=3/2
4) x^2-3x+5=0
D=(-3)^2-4×1×5=9-9=0
x=-3/2