№1 Упростить вырожение:

а) (х+3)×(х-2)
б) (2х²-у²)×(3у²-х²)

№2
Если х= -3, то 2-(х-1)×(х+1)=

№3 Решите уравнение:

(3-х)×(х+4)+х²=0

алгебра 7 класс​
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