问题
解答题
分解因式
(1)-x5y3+x3y5;
(2)(a2+1)2-4a2.
答案
(1)-x5y3+x3y5,
=-x3y3(x2-y2),
=-x3y3(x+y)(x-y);
(2)(a2+1)2-4a2,
=(a2+1+2a)(a2+1-2a),
=(a+1)2(a-1)2.
分解因式
(1)-x5y3+x3y5;
(2)(a2+1)2-4a2.
(1)-x5y3+x3y5,
=-x3y3(x2-y2),
=-x3y3(x+y)(x-y);
(2)(a2+1)2-4a2,
=(a2+1+2a)(a2+1-2a),
=(a+1)2(a-1)2.