Question

Simplify expression please thank you

Answer 1

Answer:

$f(x)=-63xy^8$

Step-by-step explanation:

$f(x)=(-9x^4y^6)(7x^{-3}y^2)$

$f(x)=(-63x^{4-3}y^{6+2})$

$f(x)=-63xy^8$