数学因式分解.高手进x²-2xy-8y²-x-14y-6

问题描述:

数学因式分解.高手进
x²-2xy-8y²-x-14y-6

x²-2xy-8y²-x-14y-6
=x^2-(2y+1)x-(8y^2+14y+6)
=x^2-(2y+1)x-(4y+3)(2y+2)
=(x-4y-3)(x(x+2y+2)