Question

помогите плз, а то математичка съест) ​

Answer 1

$c^3-\frac{25}{36}cd^2=c*(c^2-\frac{25}{36}d^2)=c*(c^2-(\frac{5}{6}d)^2)=\\\\=c*(c-\frac{5}{6}d)*(c+\frac{5}{6}d)=c(c-\frac{5}{6}d)(c+\frac{5}{6}d)$