Factorize:
y2 + 19y + 60
Now first find the numbers whose-
Sum = 19 and
Product = 60
Required numbers are 15 and 4,
So we get;
= y2 + 15y + 4y + 60
= y(y + 15) + 4(y + 15)
= (y + 15)(y + 4)