Find the common factor of the polynomial $12t^6$ and $18t^4$.

Find the common factor of the polynomial $3x^3$ and $5x^2y$.

Find the common factor of the polynomial $15y^3$ and $25x$.

Find the common factor of the polynomial $22p^4q^2$ and $33p^3q^6$.

Find the common factor of the polynomials:$39a^2b$ and $13ab^2$.

Find the common factor of the polynomial $8p^6+8p^4$ and $16p^2$ .

Find the common factor of the polynomial $9p^6$ and $6p^5q^3$.

Find the common factor of the polynomial $8x^3y$ and $12xy$ .

Find the common factor of the polynomial $14t^5$ and $21t^5$.

Find the common factor of the polynomials: $3ab$ and $9ab$.