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NastyaZ215
@NastyaZ215
July 2022
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помогите срочно, 20 баллов
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akimbelyaev228
1)X=1 или x =-3
2)X=4 или x =-4
0 votes
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kpop007
1)2х² + 6x - 2x - 6 = 0
2x² + 4x - 6 = 0
Д = 4² - 4 · 2 · (-6) = 16 + 48 = корень из 64 = 8
x1 = 1
x2 = -3.
2) x² - 16 = 0
x² = 16
x = 4.
1 votes
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LinaS11
Зачем искать дискриминант, если можно решить намного легче
kpop007
Я решил так
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Answers & Comments
2)X=4 или x =-4
2x² + 4x - 6 = 0
Д = 4² - 4 · 2 · (-6) = 16 + 48 = корень из 64 = 8
x1 = 1
x2 = -3.
2) x² - 16 = 0
x² = 16
x = 4.