分解因式: ①9x2-64y2=_; ②a2b+2ab+b=_.
问题描述:
分解因式:
①9x2-64y2=______;
②a2b+2ab+b=______.
答
①9x2-64y2=(3x+8y)(3x-8y);
②a2b+2ab+b,
=b(a2+2a+1),
=b(a+1)2.
故答案为:(3x+8y)(3x-8y);b(a+1)2.