Question

Find the greatest common factor of the terms in each of the following expressions:

$5a^4+10a^3-15a^2$

Answer 1

$5a^4+10a^3-15a^2$

HCF of 5, 10, 15 = 5

HCF of $a^4,a^3,a^2=a^2$

$\therefore \text{HCF}=5a^2$