73.7k views
5 votes
Factor x^3-4x^2 + 7x -28 by grouping

User Noloman
by
8.0k points

2 Answers

4 votes

Answer: (x^2 + 7)(x-4)

Explanation:

1. Group the first two terms and the second two terms

2. Factor the first two terms by taking out the GCF

x^2(x-4)

3. Factor the second two terms by taking out the GCF

7(x-4)

4. Combine!

(x^2 + 7)(x-4)

5. Check your work

x^3 - 4x^2 + 7x -28

User Michael Brux
by
8.4k points
5 votes
The answer is definitely 34 it’s pretty obvious
User Gavenkoa
by
7.4k points

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