Предмет: Алгебра, автор: araa54

ПОМОГИТЕ СРОЧНО АЛГЕБРА

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Ответы

Автор ответа: siz740

Объяснение:

(3х+1)(3х+1)-(3х-1)(3х+1)=44

9х²+6х+1-(9х²-1)=44

9х²+6х+1-9х²+1=44

6х+2=44

6х=44-2

6х=42

х=42:6

х=7

Автор ответа: AdelinaHitrenko

Объяснение:

(3x+1)(3x+1)-(3x+1)(3x-1)=44

9x^2+3x+3x+1-(9x^2-1)=44

9x^2+3x+3x+1-9x^2+1=44

6x+2=44

6x=42

x=7

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