问题
解答题
分解因式
(1)a2(x-y)+16(y-x);
(2)(x2+y2)2-4x2y2.
答案
(1)a2(x-y)+16(y-x),
=(x-y)(a2-16),
=(x-y)(a+4)(a-4);
(2)(x2+y2)2-4x2y2,
=(x2+2xy+y2)(x2-2xy+y2),
=(x+y)2(x-y)2.
分解因式
(1)a2(x-y)+16(y-x);
(2)(x2+y2)2-4x2y2.
(1)a2(x-y)+16(y-x),
=(x-y)(a2-16),
=(x-y)(a+4)(a-4);
(2)(x2+y2)2-4x2y2,
=(x2+2xy+y2)(x2-2xy+y2),
=(x+y)2(x-y)2.