Answer
$-x^2-8x-3y^2+3xy$
Work Step by Step
To combine like terms, add the coefficients.
$4x^2-5x-7x^2-3x-y^2+2x^2+3xy-2y^2=$
$(4+(-7)+2)x^2+((-5)+(-3))x+((-1)+(-2))y^2+3xy=$
$-x^2-8x-3y^2+3xy$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 5 - Section 5.2 - Simplifying Algebraic Expressions - Exercise - Page 218: 40
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