每日一题

Mathematics

14q^2+8pq-9p^2+40pq-70q^2+17p^2

Which of the following is equivalent to the above expression?

A.-40p^2+48pq
B.110p^2q^2+48pq
C.8(p+7q)(p-q)
D.8(p^2+48pq-56q^2)

答案和解析

答案：C

解析：