Ответ:
- \(\sqrt{\frac{16a^{14}}{a^8}}=4\sqrt{a^6}=4|a^3|\). При \(a=3\): \(4\cdot3^3=108\).
- \(\sqrt{\frac{36a^{21}}{a^{15}}}=6\sqrt{a^6}=6|a^3|\). При \(a=2\): \(6\cdot2^3=48\).
- \(\sqrt{\frac{25a^{19}}{a^{11}}}=5\sqrt{a^8}=5a^4\). При \(a=2\): \(5\cdot2^4=80\).
- \(\sqrt{\frac{64a^{17}}{a^{15}}}=8\sqrt{a^2}=8|a|\). При \(a=7\): \(56\).
- \(\sqrt{\frac{9a^{14}}{a^8}}=3\sqrt{a^6}=3|a^3|\). При \(a=2\): \(3\cdot2^3=24\).
- \(\sqrt{\frac{16a^{12}}{a^{10}}}=4\sqrt{a^2}=4|a|\). При \(a=5\): \(20\).
- \(\sqrt{\frac{9a^{19}}{a^9}}=3\sqrt{a^{10}}=3|a^5|\). При \(a=2\): \(3\cdot2^5=96\).
- \(\sqrt{\frac{4a^{16}}{a^{12}}}=2\sqrt{a^4}=2a^2\). При \(a=5\): \(2\cdot5^2=50\).
Ответ: 1) 108; 2) 48; 3) 80; 4) 56; 5) 24; 6) 20; 7) 96; 8) 50.
