Question

8 calculați a și d
E urgent! Ajutați - mă! ​

Answer 1

Răspuns:

$a)[( \frac{5}{6} ) {}^{2} + ( \frac{3}{4} ) {}^{2} ] \div \frac{ {181}^{} }{ {12}^{2} } = \\ ( \frac{25}{36} + \frac{9}{16}) \div \frac{181}{144} = \\ ( \frac{100 + 81}{144} ) \times \frac{144}{181} = \\ \frac{181 {}^{(181} }{144 {}^{(144} } \times \frac{144 {}^{(144} }{181 {}^{(181} } =1 \\ \\ d)[( \frac{1}{3} - \frac{1}{9} ) { }^{2} + (\frac{1}{3} ) {}^{3} ] \div ( \frac{1}{3} ) {}^{4} = \\ \: [ ( \frac{3 - 1}{9} ) {}^{2} + \frac{1}{27} ] \div \frac{1}{81} = \\ [( \frac{2}{9} ) {}^{2} + \frac{1}{27} ] \times 81 = \\ (\frac{4}{81} + \frac{1}{27} ) \times 81 = \\ (\frac{4 + 3}{81} ) \times 81 = \\ \frac{7}{81 {}^{(81} } \times {81}^{(81} = 7$

sper că te-am ajutat