College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter R - Section R.5 - Polynomials - R.4 Assess Your Understanding - Page 49: 92

Answer

Quotient: $3x^{2}-7x+15$ Remainder: $-32$

Work Step by Step

$\begin{array}{llllll} & 3x^{2} & -7x & +15 & & \\ & -- & -- & -- & -- & \\ x+2 \ \ ) & 3x^{3} & -x^{2} & +x & -2 & \\ & 3x^{3} & +6x^{2} & & & \\ & -- & -- & & & \\ & & -7x^{2} & +x & & \\ & & -7x & -14x & & \\ & & -- & -- & & \\ & & & 15x & -2 & \\ & & & 15x & +30 & \\ & & & -- & -- & \\ & & & & -32 & \\ & & & & & \end{array}$ Check: $(x+2)\left(3x^{2}-7x+15\right)+(-32)$ $=3x^{3}-7x^{2}+15x+6x^{2}-14x+30-32$ $=3x^{3}-x^{2}+x-2$
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