а) р²+pg²-g²-p²g=(p²-g²)-(p²g-pg²)=(p-g)(p+g)-pg(p-g)=(p-g)(p+g-pg)
б) t^2 + 6t +5=t²+5t+t+5=(t²+5t)+(t+5)=t(t+5)+(t+5)=(t+5)(t+1)
а) р²+pg²-g²-p²g=(p²-g²)-(p²g-pg²)=(p-g)(p+g)-pg(p-g)=(p-g)(p+g-pg)
б) t^2 + 6t +5=t²+5t+t+5=(t²+5t)+(t+5)=t(t+5)+(t+5)=(t+5)(t+1)