B2. Without using a pocket calculator, calculate the value of the expression

$$
8 \cdot \sqrt[20]{32}-9 \cdot \sqrt[5]{\sqrt[6]{9}}-4 \cdot \sqrt[16]{16}+4 \cdot \sqrt[5]{\sqrt[9]{27}}+5 \cdot \sqrt[5]{\sqrt[12]{81}}
$$
B2. Simplify the expression: $8 \cdot \sqrt[20]{2^{5}}-9 \cdot \sqrt[30]{3^{2}}-4 \cdot \sqrt[16]{2^{4}}+4 \cdot \sqrt[45]{3^{3}}+5 \cdot \sqrt[60]{3^{4}}=8 \cdot \sqrt[4]{2}-9 \cdot \sqrt[15]{3}-$ $4 \cdot \sqrt[4]{2}+4 \cdot \sqrt[15]{3}+5 \cdot \sqrt[15]{3}=4 \cdot \sqrt[4]{2}$

Simplification of each term:

![](https://cdn.mathpix.com/cropped/2024_06_07_8d4f73ada7862f989e67g-12.jpg?height=71&width=1602&top_left_y=2232&top_left_x=318)

![](https://cdn.mathpix.com/cropped/2024_06_07_8d4f73ada7862f989e67g-12.jpg?height=57&width=1593&top_left_y=2287&top_left_x=320)

![](https://cdn.mathpix.com/cropped/2024_06_07_8d4f73ada7862f989e67g-12.jpg?height=60&width=1593&top_left_y=2334&top_left_x=320)

![](https://cdn.mathpix.com/cropped/2024_06_07_8d4f73ada7862f989e67g-12.jpg?height=58&width=1593&top_left_y=2381&top_left_x=320)

![](https://cdn.mathpix.com/cropped/2024_06_07_8d4f73ada7862f989e67g-12.jpg?height=57&width=1596&top_left_y=2436&top_left_x=321)

![](https://cdn.mathpix.com/cropped/2024_06_07_8d4f73ada7862f989e67g-12.jpg?height=57&width=1637&top_left_y=2484&top_left_x=278)