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Galina-37 [17]
3 years ago
6

Tính nhẩm: a, 138^2-38^2 b, (10^2+8^2+6^2+4^2+2^2)- (9^2+7^2+5^2+3^2+1^2) PLZZZ, giúp vs

Mathematics
1 answer:
Stels [109]3 years ago
3 0

Answer:

is there a question?

Step-by-step explanation:

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