神马品牌网王靖雄前妻子女:因式分解
来源：百度文库 编辑：神马品牌网 时间：2024/05/05 06:54:32
x4-2x2-3 x2-xy-2y2-x-y x2+3xy+x+2y+2y2
x2+xy-6y2+x+12-6 x4+x2+y2+y4 (数字在字母后面表示乘方)另外需要过程
x2+xy-6y2+x+12-6 x4+x2+y2+y4 (数字在字母后面表示乘方)另外需要过程
1.x^4-2x^2-3
=(x^2-3)(x^2+1)
2.x^2-xy-2y^2-x-y
=(x-2y)(x+y)-(x+y)
=(x+y)(x-2y-1)
3.x^2+3xy+x+2y+2y^2
=(x+2y)(x+y)+(x+2y)
=(x+2y)(x+y+1)
4.一定是:x^2+xy-6y^2+x-12y-6
=(x+3y)(x-2y)+(x-12y)-6
=(x+3y+3)(x-2y-2)
5.x^4+x^2+y^4+y^2
分解不了.
x4-2x2-3是(x2-3)(x2+1)
1.x^4-2x^2-3
=(x^2-3)(x^2+1)
2.x^2-xy-2y^2-x-y
=(x-2y)(x+y)-(x+y)
=(x+y)(x-2y-1)
3.x^2+3xy+x+2y+2y^2
=(x+2y)(x+y)+(x+2y)
=(x+2y)(x+y+1)
4.一定是:x^2+xy-6y^2+x-12y-6
=(x+3y)(x-2y)+(x-12y)-6
=(x+3y+3)(x-2y-2)
5.x^4+x^2+y^4+y^2
分解不了.