Question

Oblicz :

a) 3(a+2b-3c) - 2 (a-2c)+5(c-b)-(a+b)=

b) am(a+1)-2( do kwadratu ) =

Answer 1

a)

3(a+2b-3c) - 2 (a-2c)+5(c-b)-(a+b)=

=3a+6b-9c-2a+4c+5c-5b-a-b=0

b)

 

a/4-a/2²  =a/4-a/4=0

czyli mamy

=1 / (3a²m+3am)-2=2*(3a²m+3am)=6a²m+6am