To solve we have to write 12x as 2x+10x <span><span>x2</span>+2x+10x+20</span> taking x and 10 as a common x(x+2)+10(x+2) now (x+2) is common <span>(x+2)(x+10) answer</span>
The GCF is a factor which divides in to each number so can never be equal to the greater number, whereas the LCM is the greater of the 2 numbers or a multiple of them