Question

Помогите пж срочно пж умоляю

Answer 1

$( frac{z}{c} + frac{c}{z} ): frac{z^2+c^2}{5z^8c} = frac{z^2+c^2}{cz} : frac{z^2+c^2}{5z^8c} = frac{5z^8c(z^2+c^2)}{cz(z^2+c^2)} =5z^7$