Сократить дробь 9p^2-q^2/9p^2+6pq+q^2

Question

Сократить дробь 9p^2-q^2/9p^2+6pq+q^2

Answer 1

9p^2-q^2/9p^2+6pq+q^2=(3p-q)(3p+q)/(3p+q)²=(3p-q)(3p+q)