x²+2xy-8y²+2x+14y-3因式分解

分类: 作业答案 • 2021-12-20 09:28:19

问题描述：

答

x^2+2xy-8y^2+2x+14y-3
=(x+4y)(x-2y)+2x+14y-3
=(x+4y)(x-2y)+3(x+4y)-(x-2y)-3
=(x+4y-1)(x-2y+3)

答

x²+2xy-8y²+2x+14y-3
=(x+4y)(x-2y)+2x+14y-3
=(x+4y-3)(x-2y+1)

答

x²+2xy-8y²+2x+14y-3
=(x+4y)(x-2y)+2x+14y-3
=(x+4y-1)(x-2y+3)