#### Answer

8x$^3$+10x$^2$-20x-4

#### Work Step by Step

$(-6x^3+7x^2-9x+3)+(14x^3+3x^2-11x-7)$
$(-6x^3+14x^3)+(7x^2+3x^2)+(-9x-11x)+(3-7)$
$(8x^3)+(10x^2)+(-20x)+(-4)$
$8x^3+10x^2-20x-4$

Published by
Pearson

ISBN 10:
0-13417-805-X

ISBN 13:
978-0-13417-805-9

8x$^3$+10x$^2$-20x-4

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