x三次方y平方-x-3xy+3 因式分解

问题描述:

x三次方y平方-x-3xy+3 因式分解


x³y²-x-3xy+3
=x(x²y²-1)-3(xy-1)
=x(xy+1)(xy-1)-3(xy-1)
=(xy-1)(x²y+x-3)