. Вычислите а)45^2-2∙25∙45+25^2/36^2-4^2 /-дробь

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. Вычислите

а)45^2-2∙25∙45+25^2/36^2-4^2

/-дробь

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Caroline 1 год 2021-09-18T09:30:30+00:00 1 Answers 0 views 0

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  1. Mackenzie
    0
    2021-09-18T09:31:43+00:00
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    \frac{45^2-2\cdot 25\cdot 45 +25^2}{36^2-4^2}=\frac{(45-25)^2}{(36-4)\cdot (36+4)}=\frac{20^2}{32\cdot 40}=\frac{20\cdot 20}{32\cdot 40}=\frac{20}{32\cdot 2}=\frac{10}{32}=\frac{5}{16}

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