Answer
$$-80 \ x^6 y^8.$$
Work Step by Step
We simplify as follows:
$$(16 x^2 y^3)(-5x^4y^5)=-5\cdot 16 x^7 y^7=-80 \ x^6 y^8.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 6 - Cumulative Review - Page 265: 19
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