多項式と単項式の乗法除法

-5x(4x-3y) (6a²b+15ab²)÷32ab 解説動画 ≫ -5x(4x-3y) = -5x×4x-5x×(-3y)
= -20x²+15xy

(6a²b+15ab²)÷32ab = (6a²b+15ab²)×23ab
= 2×6a²b3ab+2×15ab²3ab
= 4a+10b

【練習】
答表示
3a(4a-2b)
12a²-6ab-6m(23m-52n+1)
-4m²+15mn-6m(12x²y+9xy²-15xy)÷(-3xy)
-4x-3y+5(-3ab²+4ab)÷65b
-5ab2+10a3