Answer
$(x+3)(x+4)$
Work Step by Step
List the pairs of numbers whose product is 12.
1,12
2,6
3,4
Determine which pair sums to 7, since 7 is the coefficient of x.
$3+4=7$
$x^2+7x+12=(x+3)(x+4)$
Algebra 1
by Hall, Prentice
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 - Lesson Check - Page 503: 1
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