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nastyaporhun
@nastyaporhun
July 2022
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решите уравнение 2х2-5х-10=0
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Paul2910
Verified answer
2x^2 - 5x - 10 = 0
D = 25 + 80 = 105
x = (5 + корень из 105)/4
x = (5 - корень из 105)/4
2 votes
Thanks 4
ryba20101
4-5x-10=0
-5x=10-4
-5x=6
x=6÷(-5)
x=-1 1/5 или -1,2
2 votes
Thanks 2
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Answers & Comments
Verified answer
2x^2 - 5x - 10 = 0D = 25 + 80 = 105
x = (5 + корень из 105)/4
x = (5 - корень из 105)/4
-5x=10-4
-5x=6
x=6÷(-5)
x=-1 1/5 или -1,2