Question

Preciso de ajuda nessas expressões numericas

Answer 1

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$A) \\ -4-(- \frac{27}{8} )-\not1+\not1= \\ \\ -4+ \frac{27}{8} = \\ \\ \frac{-32+27}{8} =- \frac{5}8}$ 

$B) \\ \frac{(3.7)^{30}}{(3^2.7)^{15}} = \frac{\not3^{30}.7^{30}}{\not3^{30}.7^{15}} = 7^{30} \div7^{15} = 7^{30-15} = 7^{15}$ 

$C) \\ \sqrt[3]{ \frac{ 2^{28}(1+2^2) }{10} } = \\ \\ \sqrt[3]{ \frac{ 2^{28}(\not5 }{\not10_2} }= \\ \\ \sqrt[3]{ 2^{28} \div2} = \\ \\ \sqrt[3]{2^{28-1} } = \\ \\ \sqrt[3]{ 2^{27} } =2^9$ 

$D) \\ \sqrt[5]{ \frac{3^{18}+(3^3)^8}{30} } = \\ \\ \sqrt[5]{ \frac{3^{18}+3^{16}}{30} } = \\ \\ \sqrt[5]{ \frac{3^{16}(3^2+1)}{30} } = \\ \\ \sqrt[5]{ \frac{3^{16}.\not10}{\not30_3} } = \\ \\ \sqrt[5]{3^{16}\div3} = \\ \\ \sqrt[5]{3^{16-1}} = \\ \\ \sqrt[5]{3^{15}} =3^3=27$