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ololo11 [35]
4 years ago
11

Please help me as soon as possible!.!.!

Mathematics
1 answer:
aalyn [17]4 years ago
8 0
You want to use the distributive property for this one: 

-7k + 21
Your answer should be the very bottom left one. 
Hopefully thta helped! :) 
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2 years ago
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beks73 [17]

Answer:

\frac{2}{5}±\frac{\sqrt{17}}{5}

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Don't mind the ±

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