Question

Помогите с решением.
1) ((p+q)^2)*((p-q)^2)
2) (5+m)(m-5)(m-5)(m+5)

Answer 1

1. (p+q)² * (p-q)² = ((p+q)-(p-q))((p+q)+(p-q))=(p+q-p+q)(p+q+p-q)=2q*2p = 4pq
2. (m+5)² * (m-5)² = ((m+5)-(m-5))((m+5)+(m-5))=(m+5-m+5)(m+5+m-5)=10m²