5. Упростите выражение (-1+1/x5y13)³. 0,16х7у. 4

$$(-1 \frac{1}{4} x^5 y^{13})^3 \cdot 0.16x^7y = (-\frac{5}{4} x^5 y^{13})^3 \cdot \frac{16}{100}x^7y = (-\frac{125}{64} x^{15} y^{39}) \cdot \frac{16}{100}x^7y = -\frac{125 \cdot 16}{64 \cdot 100} x^{15+7} y^{39+1} = -\frac{5}{4} \cdot \frac{4}{100}x^{22} y^{40} = -\frac{5}{100} x^{22} y^{40} = -0.05x^{22}y^{40}$$

Ответ: $$-0.05x^{22}y^{40}$$