分解因式:(2x+1)(x-1)-(x+1)(x-2)-10

2024-12-04 05:28:56
推荐回答(2个)
回答(1):

(2x+1)(x-1)-(x+1)(x-2)-10
=2x²-x-1-(x²-x-2)-10
=x²-9
=(x+3)(x-3)

回答(2):

原式=2X^2+X-2X-1-X^2-X+2X+2-10
=X^2-9
=(X+3)(X-3)