x^2+2xy-8y^2-4x-10y+3因式分解
问题描述:
x^2+2xy-8y^2-4x-10y+3因式分解
答
x^2+2xy-8y^2-4x-10y+3
=(x+4y)(x-2y)-4x-10y+3
=(x+4y-1)(x-2y-3)
十字相乘
x+4y ﹣1
x-2y ﹣3