Question

8 пж, срочно. Даю 75 баллов

Answer 1

Ответ:

1

Объяснение:

$\frac{6.7*8.4^{2}-6.7*1.6^{2}}{13.4*6.7^{2}-13.4*3.3^{2}} =\\=\frac{6.7*(8.4^{2}-1.6^{2})}{13.4*(6.7^{2}-3.3^{2})}=\\=\frac{8.4^{2}-1.6^{2}}{2*(6.7^{2}-3.3^{2})}=\\=\frac{(8.4-1.6)(8.4+1.6)}{2*(6.7-3.3)(6.7+3.3)}=$

$=\frac{6.8*10}{2*3.4*10}=\\=\frac{68}{68}=1$