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Calculați:
(3a - 1)(-2a²+a -3) - (5a + 1)(3 – a)

URGENT!!!!!​


Răspuns :

Răspuns:

-6a³+10a²-24a

(3a-1) (-2a+a-3)-(5a+1) (3-a)=

-6a³+3a²-9a+2a²-a+3- (15a-5a²+3-a)=

-6a³+3a²-9a+2a²-a+3-(14a-5a²+3)=

-6a³+3a²-9a+2a²-a+3-14a+5a²-3=

-6a³+3a²-9a+2a²-a-14a+5a²=

-6a³+10a²-9a-a-14a=

-6a³+10a²-24a