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Which of the binomials below is a factor of this trinomial? 3x2 + 18x-21 O A. X-3 O B. X-1 O c. x+1 O D. X+ 3 SUBMIT
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Which of the binomials below is a factor of this trinomial?

3x2 + 18x-21
O A. X-3
O
B. X-1
O c. x+1
O D. X+ 3
SUBMIT

User Fadzli Feizal
by
8.4k points

1 Answer

2 votes

Answer:

B. X-1

Explanation:


3x^2 + 18x-21

Factor out common term : 3


=3\left(x^2+6x-7\right)\\\\Factor\: : x^2+6x-7\right \\\\=3\left(x-1\right)\left(x+7\right)

User Alexander Baltasar
by
7.6k points
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