问题
解答题
分解因式:
(1)m2(a+b)-(a+b)
(2)(x2+y2)2-4x2y2.
答案
(1)m2(a+b)-(a+b)
=(a+b)(m2-1)
=(a+b)(m-1)(m+1);
(2)(x2+y2)2-4x2y2,
=(x2+y2-2xy)(x2+y2+2xy)
=(x-y)2(x+y)2.
分解因式:
(1)m2(a+b)-(a+b)
(2)(x2+y2)2-4x2y2.
(1)m2(a+b)-(a+b)
=(a+b)(m2-1)
=(a+b)(m-1)(m+1);
(2)(x2+y2)2-4x2y2,
=(x2+y2-2xy)(x2+y2+2xy)
=(x-y)2(x+y)2.