sango
sango
03-05-2017
Mathematics
contestada
K2-4K-21. How do you factor this
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apologiabiology
apologiabiology
03-05-2017
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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