Ответ:
Объяснение:
3.17 . 1 ) x² - 0,002809 = 0; x² = 0,002809 ; x = ± √0,002809 = ± 0,053 ;
2) 3,286x² = 0 ; x² = 0 : 3,286 ; x² = 0 ; x = 0 ;
3) 2x² - 48,096 = 0 ; 2x² = 48,096 ; x² = 48,096 : 2 ; x² = 24,048 ;
x = ± √24,048 = ± 4,9038... ≈ ± 4,904 ; x ≈ ± 4,904 ;
4) ( x - 4 )² - 28,09 = 0 ; ( x - 4 )² = 28,09 ; x - 4 = ± √28,09 ; x - 4 = ± 5,3 ;
x = 4 ± 5,3 ; x₁ = - 1,3 ; x₂= 9,3 .
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Answers & Comments
Ответ:
Объяснение:
3.17 . 1 ) x² - 0,002809 = 0; x² = 0,002809 ; x = ± √0,002809 = ± 0,053 ;
2) 3,286x² = 0 ; x² = 0 : 3,286 ; x² = 0 ; x = 0 ;
3) 2x² - 48,096 = 0 ; 2x² = 48,096 ; x² = 48,096 : 2 ; x² = 24,048 ;
x = ± √24,048 = ± 4,9038... ≈ ± 4,904 ; x ≈ ± 4,904 ;
4) ( x - 4 )² - 28,09 = 0 ; ( x - 4 )² = 28,09 ; x - 4 = ± √28,09 ; x - 4 = ± 5,3 ;
x = 4 ± 5,3 ; x₁ = - 1,3 ; x₂= 9,3 .