What is the greatest common factor of the following sets of monomials?
$30m^3{n}^2,45m^2{n}^4,75m^4{n}^3$

What is the greatest common factor of the following lists of numbers?

$42,70,98$

What is the greatest common factor of the following lists of numbers?

$19,57$

What is the greatest common factor of the following sets of monomials?

$6x,9x^2,15x^3$

Factor the GCF out of:

$8x+12$

Factor the GCF out of:

$6x^2+9x$

Factor the GCF from the polynomial.

$18x^3{y}^2-27x^2{y}^3+9x^{4}y$