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kozhanovaluba
@kozhanovaluba
July 2022
2
4
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Решите уравнение а) 4х2+4х+1 = 0
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Grdn
D = 16 - 16 = 0
x = -4/4 = -1
1 votes
Thanks 3
babupshka
4 х 2 +4Х +1=0
8 + 4Х +1=0
4Х =0 -1 - 8
4Х =-9
Х =- 2,25
проверяем: 4 х 2 + 4 х (-2,25) +1 =0
0 =0
1 votes
Thanks 2
babupshka
Я решала : 4 умножить на 2
babupshka
Прошу прощения, Вашу запись я поняла именно так: 4 умножить на 2
kozhanovaluba
нет, это 4х в квадрате
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Answers & Comments
x = -4/4 = -1
8 + 4Х +1=0
4Х =0 -1 - 8
4Х =-9
Х =- 2,25
проверяем: 4 х 2 + 4 х (-2,25) +1 =0
0 =0