Предмет: Алгебра, автор: jojogiornogiovanna

1. а) (x-5)×(x+5)
б)(7c+3)×(7c-3)
в)(4x-9y)×(4x+9y)
г)(a^2-2b)×(a^2+2b)​


pavlikshevch: 1) x^2-25
hentai0: а) (x^2-25^2)
б) (49c^2+9)
hentai0: в) (16x^2-81y^2)
г) (a^4-4b^2)

Ответы

Автор ответа: aishakristina89
1

Ответ:

а) х²-25

б) 49c²-9

в) 16х²-81у²

г) а⁴-4b²

Автор ответа: pavlikshevch
1

Ответ:

1)x^2-25

2)49c^2-9

3)16x^2-81y^2

4)a^4-4b^2

Объяснение:

(a-b)*(a+b)=a^2-b^2

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