Question

- (3a - 1)²-(4-5a)(7 - 2a) - 5a²
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Answer 1

Ответ:

- (3a - 1)²-(4-5a)(7 - 2a) - 5a²=

=-(9а²-6а+1)-(28-8а-35а+10а²)-5а²=

=-9а²+6а-1-28+8а +35а-10а²-5а²=

=-24а²+49а-29

Answer 2

-(3а-1)²-(4-5а)(7-2а)-5а²

-(9а²-6а+1)-(28-8а-35а+10а²)-5а²

-9а²+6а-1-(28-43а+10а²)-5а²

-9а²+6а-1-28+43а-10а²-5а²

-24а²+49а-29