Answer
$-7t^2+5t+10$
Work Step by Step
By combining like terms, the given expression, $
3-2t^2+8t-3t-5t^2+7
,$ simplifies to
\begin{array}{l}\require{cancel}
(-2t^2-5t^2)+(8t-3t)+(3+7)
\\\\=
-7t^2+5t+10
.\end{array}
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter R - Elementary Algebra Review - R.4 Polynomials - R.4 Exercise Set - Page 961: 37
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