x加1乘以x加2乘以x加3乘以x加4减8等于0

2025-05-13 02:13:23
推荐回答(1个)
回答(1):

解:
(x-1)(x-2)+3x(x+3)-4(x+2)(x-3)
=x
2
-3x+2+3x
2
+9x-4x
2
+4x+24
=10x+26
不明白可以追问,有用请采纳!