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Ответ

Ответ дан
Trey55

Ответ:

а)(2b-1)(2b+1) = 4b²-1

б)(4a+3b)(4a-3b) = 16a²-9b²

Ответ

Ответ дан
denisstretyakov

в) displaystyle tt (2b-1)(2b+1)=(2b)^2-1^2=bold{4b^2-1}

г) displaystyle tt (4a+3b)(4a-3b)=(4a)^2-(3b)^2=bold{16a^2-9b^2}

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