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elena-14-01-66 [18.8K]
3 years ago
8

I don't know how to solve these two types of questions: (x+y)(x-y)=20 and (z+z)(z+z)=63

Mathematics
1 answer:
Ksju [112]3 years ago
7 0

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Answer:

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See attached image.

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frez [133]
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