Answer
$x^4+4x^3+4x^2-x-2$
Work Step by Step
Given:$(x^2+x-1)(x^2+3x+2)$
Multiply the given polynomials.
This implies
$=x^4+3x^3+2x^2+x^3+3x^2+2x-x^2-3x-2$
or, $=x^4+3x^3+x^3+2x^2+3x^2-x^2+2x-3x-2$
Hence, the result is : $=x^4+4x^3+4x^2-x-2$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 5 - Review Exercises - Page 400: 19
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