如何因式分解:2x²+4xy-7x-2y+3
问题描述:
如何因式分解:2x²+4xy-7x-2y+3
答
2x²+4xy-7x-2y+3
=(2x²-7x+3)+(4xy-2y)
=(2x-1)(x-3)+2y(2x-1)
=(2x-1)(x+2y-3)