问题
解答题
因式分解 (1)x3+2x2y+xy2;
(2)4m2﹣n2﹣4m+1.
答案
解:(1)x3+2x2y+xy2=x(x2+2xy+y2)=x(x+y)2;
(2)4m2﹣n2﹣4m+1=(4m2﹣4m+1)﹣n2=(2m﹣1)2﹣n2=(2m﹣1+n)(2m﹣1﹣n).
因式分解 (1)x3+2x2y+xy2;
(2)4m2﹣n2﹣4m+1.
解:(1)x3+2x2y+xy2=x(x2+2xy+y2)=x(x+y)2;
(2)4m2﹣n2﹣4m+1=(4m2﹣4m+1)﹣n2=(2m﹣1)2﹣n2=(2m﹣1+n)(2m﹣1﹣n).