问题
解答题
因式分
(1)6q(2p+3q)+4p(3q+2p);
(2)(x2+x)2-(x+1)2.
答案
(1)原式=2(2p+3q)(3q+2p)=2(3q+2p)2;
(2)原式=x2(x+1)2-(x+1)2,
=(x+1)2(x2-1),
=(x+1)2(x-1)(x+1).
因式分
(1)6q(2p+3q)+4p(3q+2p);
(2)(x2+x)2-(x+1)2.
(1)原式=2(2p+3q)(3q+2p)=2(3q+2p)2;
(2)原式=x2(x+1)2-(x+1)2,
=(x+1)2(x2-1),
=(x+1)2(x-1)(x+1).