(3a-8)×(5a-1)等于多少?

2025-12-14 18:10:38
推荐回答(2个)
回答1:

(3a-8)×(5a-1)=15a²-43a+8

回答2:

(3a-8)×(5a-1)
=3a×5a-3a×1-8×5a-8×(-1)
=15a^2-3a-40a+8
=15a^2-43a+8