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jarptica [38.1K]
3 years ago
6

K2-4K-21. How do you factor this

Mathematics
1 answer:
alexira [117]3 years ago
4 0
Assuming yo mean
k²-4k-21

factor by doing
what 2 numbers multipily to get -21 and add to get -4?
-7 and 3

(k-7)(k+3) is factored
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