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Mathematics
Junior High
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教えてください🥲🥲

(4) 123² - 125 × 121 (4)123 (2) (3) laalbsbe
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Answers

BaSO4
BaSO4

=123^2-(123+2)(123-2)
=123^2-(123^2-4)
=123^2-123^2+4
=4

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