Answer
$$-32x^2+8x^3-12x^4.$$
Work Step by Step
We simplify by distributing $-4x^2$ as follows:
$$-4x^2(8-2x+3x^2)=-4x^2(8)-4x^2(-2x)-4x^2(3x^2)\\ = -32x^2+8x^3-12x^4.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 5 - Review - Page 232: 26
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