Предмет: Алгебра, автор: ivlevaolga51

упростите выражение (3х+2)^2-(3х-1)^2
^2(это в квадрате)

Ответы

Автор ответа: azizasmagulova82
1

Ответ:

(3x+2)`²-2(3x-1)'²

Объяснение:

2(3x+2)²-(9x²-6x+1)

2(9x²+12+4)-9x²+6x-1

18x²+24x+8-9x²+6x-1

9x²+30x+7

ivlevaolga51: Перед скобкой не надо двойку
ivlevaolga51: (Зх+2)`2-(3х-1)`2
ivlevaolga51: `2-это в квадрате
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