因式分解:x*x-xy-2y*y-x+5y-2

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因式分解:x*x-xy-2y*y-x+5y-2
因式分解:x*x-xy-2y*y-x+5y-2

因式分解:x*x-xy-2y*y-x+5y-2
=(x-2y)(x+y)-x+5y-2
=(x-2y+1)(x+y-2)

x*x-xy-2y*y-x+5y-2
=(x-2y)(x+y)-x+5y-2
=(x-2y+1)(x+y-2)
x-2y 1

×
x+y ﹣2
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