[tex]a)~3a+6b=3(a+2b)\\b)~-36p+48q=12(4q-3p)\\c)~y^2-5xy+2y=y(y-5x+2)\\d)~p^4q+p^3=p^3(pq+1)\\e)~7x^3+21x^2y=7x^2(x+3xy)\\f)~21p^3q^2-27p^2q^3=3p^2q^2(7p-9q)[/tex]
Pozdrawiam.
