The √125 can be factored out to 25 and 5 then 25 can be factored out to 5 and 5. Then you pair up the numbers, you have a pair of 5's and a 5 left over. So the pair of 5's goes inside the radical as √5 and on the outside of the radical you have 5×3. So 3√125≈15√5.
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Answer:
C
Step-by-step explanation:
If you distribute -5 to the things in the parenthesis you would get 10k-20 which is the same as -5(-2k+4)
