Answer
$x^{2}-6x+17$
Work Step by Step
Expand the brackets, be mindful of the negative sign:
$=4x^{2}-12x+20-3x^{2}+6x-3$
Collect the like terms:
$=(4-3)x^{2}+(-12+6)x+(20-3)$
$=x^{2}-6x+17$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 1 - Section 1.3 - Algebraic Expressions - 1.3 Exercises - Page 33: 22
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