x的2次方-xy-4+1/4y的2次方因式分解
问题描述:
x的2次方-xy-4+1/4y的2次方因式分解
答
x - xy - 4 + 1/4y = (x - 1/2y) - 4 = (x - y/2 + 2)(x - y/2 - 2) = (2x - y + 4)(2x - y - 4)/4
x的2次方-xy-4+1/4y的2次方因式分解
x - xy - 4 + 1/4y = (x - 1/2y) - 4 = (x - y/2 + 2)(x - y/2 - 2) = (2x - y + 4)(2x - y - 4)/4