August 2022 1 6 Report
Запишите в ответ номера верных равенств:
1) (5-b)(5+b=b2-16
2)(c-1)(4c-3)=(1-c)(4c-3)
3)(3a-1)(2-a)=-3a2+7a-2
4)(5b-3)(3+5b)=25b2-9
(b2;-3a2;25b2; во второй степени
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