问题
填空题
分解因式:x13-2x12x2-x1+2x2=______.
答案
x13-2x12x2-x1+2x2,
=(x13-2x12x2)-(x1-2x2),
=x12(x1-2x2)-(x1-2x2),
=(x1-2x2)(x12-1),
=(x1-2x2)(x1+1)(x1-1).
分解因式:x13-2x12x2-x1+2x2=______.
x13-2x12x2-x1+2x2,
=(x13-2x12x2)-(x1-2x2),
=x12(x1-2x2)-(x1-2x2),
=(x1-2x2)(x12-1),
=(x1-2x2)(x1+1)(x1-1).