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belova211214
@belova211214
August 2022
2
20
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Помогите х2 + 6х - 91 =0
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MizoriesKun
х
²
+ 6х - 91 =0
D=36+364=400
√D=20
x₁=(-6+20)/2=7
x₂=(-6-20)/2=-13
2 votes
Thanks 1
belova211214
спасибо
WhiteWhale141
Вот решение в фотографии.
0 votes
Thanks 0
belova211214
эм....икс в квадрате, а не 2х
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Answers & Comments
D=36+364=400 √D=20
x₁=(-6+20)/2=7
x₂=(-6-20)/2=-13