Answer:
[tex]30x^5y^7z^6[/tex]
Step-by-step explanation:
[tex]\left(5x^2y^3z^4\right)\left(6x^3y^4z^2\right)[/tex]
[tex]5x^2y^3z^4\cdot \:6x^3y^4z^2[/tex]
[tex]30x^3x^2y^4y^3z^4z^2[/tex]
[tex]30x^5y^4y^3z^4z^2[/tex]
[tex]30x^5y^7z^4z^2[/tex]
[tex]30x^5y^7z^6[/tex]
