#### Answer

$A=4x+10$

#### Work Step by Step

$A=(x+4)(x+3)-(x+2)(x+1)=(x^2+7x+12)-(x^2+3x+2)=4x+10$

Published by
Pearson

ISBN 10:
0-13446-914-3

ISBN 13:
978-0-13446-914-0

$A=4x+10$

$A=(x+4)(x+3)-(x+2)(x+1)=(x^2+7x+12)-(x^2+3x+2)=4x+10$

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