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Which of the binomials below is a factor of this trinomial? x2 + 13x + 42 A. x - 7 B. x + 7 C. x + 84 D. x2 + 12
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Which of the binomials below is a factor of this trinomial?

x2 + 13x + 42

A. x - 7
B. x + 7
C. x + 84
D. x2 + 12

User Soergener
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1 Answer

5 votes
First factor x² + 13x + 42.

x² + 6x + 7x + 42

x(x + 6) + 7(x + 6)

The factors are : (x + 7)(x + 6)

Solution: B. x + 7
User Darkwater
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