The HCF of 6 & 4 is
Factors of 6 = 1 , 2 , 3 , 6 Factors of 4 = 1 , 2 , 4 As you can see, common factors of 6 & 4 are 1 & 2. Hence the HCF of 6 & 4 is 2.
HCF of 4 and 6
HCF of (x2−9) and (x+3)2 is 'a'. HCF of x2+x−6 and x2−4 is 'b'. Then a×b is ____.