问题
填空题
多项式10a(x-y)2-5b(y-x)的公因式是______.
答案
∵10a(x-y)2=5(x-y)•2a(x-y),
5b(y-x)=5(x-y)•(-b);
∴多项式10a(x-y)2-5b(y-x)的公因式是5(x-y).
多项式10a(x-y)2-5b(y-x)的公因式是______.
∵10a(x-y)2=5(x-y)•2a(x-y),
5b(y-x)=5(x-y)•(-b);
∴多项式10a(x-y)2-5b(y-x)的公因式是5(x-y).