Ответ:
[tex] \frac{30^{2} - 15^{2} }{10^{2} -5^{2} } = \frac{900 - 225}{100 - 25} = \frac{675}{75} = 9[/tex]
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Ответ:
[tex] \frac{30^{2} - 15^{2} }{10^{2} -5^{2} } = \frac{900 - 225}{100 - 25} = \frac{675}{75} = 9[/tex]