Question

Преобразуйте в многочлен стандартного вида
9p^2-(q-3p)^2

Answer 1

 = 9p^2 - ( q^2 - 6pq + 9p^2) = 9p^2 - q^2 + 6pq - 9p^2 = -q^2 + 6pq