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3 years ago

Pls help i don’t understand

Mathematics

1 answer:

kirill [66]3 years ago

8 0

Answer:

r + 7 is a factor.

Step-by-step explanation:

You have to divide $3r^{4} +23r^{3} +15r^{2} +r - 42$ by r + 7. If the remainder is 0, then r + 7 is a factor of $3r^{4} +23r^{3} +15r^{2} +r - 42$ .

I did that and the remainder was 0.

So, yes, r + 7 is a factor.

You will need to learn how to do that division in order to solve this problem. OK?

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