Question

Find the product.(0.5n 5)2(10n 7) 3

Answer 1

Your product would be
$(0.5n5)2(10n7)3$

Answer 2

The following is just a guess because I'm not sure what the problem is.

$(0.5n^5)^2(10n^7)^3 =$

$= 0.5^2 \times (n^5)^2 \times 10^3 \times (n^7)^3$

$= 0.25 \times 1000 \times n^{10} \times n^{21}$

$= 250n^{31}$