赚现金
分解因式:(1)(2x2﹣3x+1)2﹣22x2+33x﹣1;(2)x4+7x3+14x2+7x+1;(3)(x+y)3+2xy(1﹣x﹣y)﹣1;(4)(x+3)(x2﹣1)(x+5)﹣20.
试题篮