Question

плиз решите А и Г СРОЧНО!!!!

Answer 1

$displaystylett 1) frac{4^8cdot9^7+6^{12}cdot180}{8^6cdot3^{14}-6^{14}}= frac{2^{16}cdot3^{14}+3^{12}cdot2^{12}cdot5cdot2^2cdot3^2}{2^{18}cdot3^{14}-2^{14}cdot3^{14}}=\\\=frac{2^{16}cdot3^{14}+3^{14}cdot2^{14}cdot5}{3^{14}cdot2^{14}(2^{4}-1)}=frac{3^{14}cdot2^{14}(2^{2}+5)}{3^{14}cdot2^{14}(2^{4}-1)}=frac{4+5}{16-1}=frac{9}{15}=frac{3}{5}$

$displaystylett 2) frac{21(3cdot7^{12}-14cdot7^{11})}{(3cdot7^6)^2}=frac{3cdot7(3cdot7^{12}-2cdot7^{12})}{3^2cdot7^{12}}= frac{7^{12}(3-2)}{3cdot7^{11}}=frac{7}{3}$