34. (-$$\frac{5}{7}$$a³b²) × (-$$\frac{49}{25}$$a⁵b).

$$(-\frac{5}{7}a^3b^2) \times (-\frac{49}{25}a^5b) = -\frac{5}{7} \times -\frac{49}{25} \times a^3 \times a^5 \times b^2 \times b = \frac{7}{5}a^8b^3$$