Phamphuong
Phamphuong Phamphuong
  • 24-07-2021
  • Mathematics
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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

Respuesta :

jh32412 jh32412
  • 24-07-2021

Answer:

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Step-by-step explanation:

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