怎样因式分解5x눀+6xy-8y눀-3x+8y-2 ?

2025-06-21 08:46:08
推荐回答(2个)
回答1:

5x²+6xy-8y²-3x+8y-2
=(x+2y)(5x-4y)+2(x+2y)-(5x-4y)-2
=(x+2y)(5x-4y+2)-(5x-4y+2)
=(x+2y-1)(5x-4y+2)

回答2: