The given polynomial is,
[tex]15x^6+35x^4+10x^3[/tex]
Expand the above polynomial.
[tex]5\times3x^3x^3+5\times7x^3x+2\times5x^3[/tex]
Find the common factors in each term and write it as the common factor with the remaining terms inside brackets.
[tex]5^{}x^3(3x^3+7x+2)[/tex]
The term outside the brackets is the GCF.
So, the GCF of the given polynomial is,
[tex]5x^3[/tex]
