Odpowiedź:
[tex]a)\ \ (5a^2+2a-3b)+(3a^2+7a+6b)=5a^2+2a-3b+3a^2+7a+6b=8a^2+9a+3b\\\\\\b)\ \ (2pq-5p+3q)+(6pq-2q)=2pq-5p+3q+6pq-2q=8pq-5p+q\\\\\\c)\ \ (-x^2+3y)+(3y+3x^2-2xy)=-x^2+3y+3y+3x^2-2xy=2x^2+6y-2xy\\\\\\d)\ \ (-3b^2-2ab+4a)+(a-3b^2+2ab+2b)=-3b^2-2ab+4a+a-3b^2+2ab+2b=\\\\=-6b^2+5a+2b[/tex]
