Question

Any help would be greatly appreciated

Answer 1

Answer:

$\boxed{\sf \ \ \ 49a^8b^6c^2 \ \ \ }$

Step-by-step explanation:

Hello,

$(-7a^4b^3c)^2=(-1)^27^2a^{4*2}b^{3*2}c^2=49a^8b^6c^2$

as

$(-1)^2=1$