2x^2 - 18=0 3x^2 - 9=0 5x^2 + 1=0 Решите пожалуйста!. Created by evgeniy1238. algebra-ru

2x^2 - 18=0 3x^2 - 9=0 5x^2 + 1=0 ...

evgeniy1238 @evgeniy1238

July 2022 1 6 Report

2x^2 - 18=0 3x^2 - 9=0 5x^2 + 1=0 Решите пожалуйста!

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Хеда15

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2х²-18=0/2 3х²-9=0/3 5х²+1=0
х²-9=0 х²-3=0 5х²=-1/5
(х-3)(х+3)=0 (х-√3)(х+√3)=0 х²=-0,2 - нет корней
х-3=0 или х+3=0 х-√3=0 или +√3=0
х=3 х=-3 х=√3 или х=-√3

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