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3 votes
What two numbers can be multiplied to get 21 and added to get -17?

User Nanotek
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7.8k points

1 Answer

4 votes
it appears that this is a step in factoring
in order to find the two numbers that add to -17
we need to first find all the factors that multiply to 21
to add to -17, ll the factors of 21 will be negative
21
-1, -21
-3, -7
-7, -3
-21, -1
we can try and add the two pairs of each number together
but none of the combinations will work.
User Benroth
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8.1k points