问题
填空题
因式分x-2x2=______.
a3-4a=______
a3-2a2+a=______.
答案
x-2x2=x(1-2x);
a3-4a,
=a(a2-4),
=a(a+2)(a-2);
a3-2a2+a,
=a(a2-2a+1),
=a(a-1)2.
故答案为:x(1-2x);a(a+2)(a-2);a(a-1)2.
因式分x-2x2=______.
a3-4a=______
a3-2a2+a=______.
x-2x2=x(1-2x);
a3-4a,
=a(a2-4),
=a(a+2)(a-2);
a3-2a2+a,
=a(a2-2a+1),
=a(a-1)2.
故答案为:x(1-2x);a(a+2)(a-2);a(a-1)2.