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Produsul fractiilor: 144 supra 49 la puterea 6 si 7 supă 9 la puterea 12.


Răspuns :

(144/49)^6 x (7/9)^12 = [(12/7)^2]^6 x (7/9)^12 = (12/7)^12 x (7/9)^12 = 12^12/7^12 x 7^12/9^12 = 12^12/9^12 = (4x3)^12/(3^2)^12 = (4^12 x 3^12)/3^24 = 4^12/3^12 = (4/3)^12

[tex] (\frac{144}{49})^{6} \cdot (\frac{7}{9})^{12} = (\frac{12}{7})^{2\cdot6}\cdot (\frac{7}{9} )^{12} = \frac{12^{12}}{7^{12} }\cdot \frac{ 7^{12}}{9^{12} } = \frac{(3 ^{12} \cdot4^{12} ) ^{12}}{3^{24} }= \frac{4^{12} }{3^{12}} =( \frac{4}{3})^{12} [/tex]