Question

Представьте выражение в виде степени с основание b.
а) $b \sqrt{b \sqrt[3]{b} }$
б) $\sqrt[3]{b \sqrt[3]{b \sqrt{b} } }$
в) $\sqrt[4]{ b^{2} \sqrt[3]{b \sqrt{b} } }$

Answer 1

$а) \: \: b \sqrt{b \sqrt[3]{b} } = b \times {b}^{ \frac{1}{2} } \times ( {b}^{ \frac{1}{3} } ) ^{ \frac{1}{2} } = \\ = {b}^{1 + \frac{1}{2} + \frac{1}{6} } = {b}^{ \frac{6 + 3 + 1}{6} } = {b}^{ \frac{10}{6} } = {b}^{1 \frac{2}{3} }$

$б) \: \: \sqrt[3]{b \sqrt[3]{b \sqrt{b} } } = \\ = {b}^{ \frac{1}{3} } \times {b}^{ \frac{1}{3} \times \frac{1}{3} } \times {b}^{ \frac{1}{2} \times \frac{1}{3} \times \frac{1}{3} } = \\ = {b}^{ \frac{1}{3} } \times {b}^{ \frac{1}{9} } \times {b}^{ \frac{1}{18} } = \\ = {b}^{ \frac{1}{3} + \frac{1}{9} + \frac{1}{18} } = {b}^{ \frac{6 + 2 + 1}{18} } = {b}^{ \frac{9}{18} } = {b}^{ \frac{1}{2} }$

$в) \: \: \sqrt[4]{ b^{2} \sqrt[3]{b \sqrt{b} } } = \\ = {b}^{ \frac{2}{4} } \times {b}^{ \frac{1}{3} \times \frac{1}{4} } \times {b}^{ \frac{1}{2} \times \frac{1}{3} \times \frac{1}{4} } = \\ = {b}^{ \frac{1}{2} } \times {b}^{ \frac{1}{12} } \times {b}^{ \frac{1}{24} } = \\ = {b}^{ \frac{1}{2} + \frac{1}{12} + \frac{1}{24} } = {b}^{ \frac{12 + 2 + 1}{24} } = \\ = {b}^{ \frac{15}{24} } = {b}^{ \frac{5}{8} }$