Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 8 - Polynomials and Factoring - 8-5 Factoring X(squared) + bx + c - Practice and Problem-Solving Exercises: 13

Answer

$(v+10)(v+2)$

Work Step by Step

$v^2+12v+20=(v+10)(v+\underset\uparrow?)$ $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ $added to 10, must equal 12 $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ $multiplied by 10, must equal 20 Let y be ?. $y+10=12$ $y+10-10=12-10$ $y=2$ $10y=20$ $10y\div10=20\div10$ $y=2$
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